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1.
This study investigates the diet of an eleventh century CE parish community located in northwestern Germany. We assessed the isotopic compositions of human (n = 24) and faunal (n = 17) bone collagen (δ 13Ccol, δ 15Ncol) and human structural carbonate (δ 13Csc) using skeletal material recovered from the Dalheim cemetery. Traditional interpretation of the isotopic data indicates that Dalheim residents likely relied on a C3 plant-based diet and consumed some terrestrial animal products without evidence of marine resource input in the diet. Bivariate and multivariate models used as an additional means to assess diet indicate minor consumption of C4 plant foods in this community. The multivariate-isotope model identified regional similarities and differences in C4 plant/marine food consumption and in dietary protein sources by comparing data from Dalheim with those of other medieval sites from the published literature. We did not observe sex differences in this population but differences in δ 15Ncol suggest that juveniles consumed the lowest trophic level protein.  相似文献   

2.
Archaeological research at the UNESCO World Heritage site of Teotihuacan (ad 1–ad 550) in the Basin of Mexico provides evidence for leporid (cottontails and jackrabbits) breeding and/or management within a residential complex of the city, Oztoyahualco. The present study tests this notion by analyzing Teotihuacan leporid bone collagen samples (n = 134) for stable isotope ratios of carbon (δ13Ccollagen) and nitrogen (δ15Ncollagen) to provide information on ancient leporid diet and ecology. Results demonstrate that carbon-stable isotope values from Oztoyahualco specimens are significantly higher than those from other contexts at Teotihuacan and from a sample of modern specimens from the region. These data are consistent with the notion that leporids from Oztoyahualco consumed diets high in C4 and CAM plants, such as the human-cultivated staples of maize (Zea mays), nopal cactus (Opuntia sp.), and maguey (Agave sp.). Nitrogen-stable isotope results show no significant differences between Oztoyahualco and other contexts, suggesting that Oztoyahualco leporids inhabited similar environments, ate food grown on similar soils, and were feeding at the same trophic level. When considered in combination with archaeological data and previously published isotopic results, δ13Ccollagen data from Oztoyahualco support the idea that leporids were artificially provisioned by humans, consistent with the hypothesis that they were bred and/or managed through human labor. More broadly, these results hint that food production at Teotihuacan was at least in part conducted by specialized workers in a manner similar to that of commercialized market economy of the later Aztec Empire (ad 1428–1521).  相似文献   

3.
Strontium, carbon, and nitrogen isotopes of human bone and tooth remains have been used to reconstruct residential mobility and diet of early medieval populations at Las Gobas from the sixth to eleventh centuries. Most non-local individuals correspond to the tenth to eleventh centuries and were mostly women and infants. This residential mobility coincided with the formation of Laño village and the abandonment of artificial cave settlement. Carbon and nitrogen isotope ratios of bone collagen indicate an omnivorous homogenous diet based on terrestrial plant resources, with few animal-derived proteins from livestock. Millet consumption was restricted to an earlier period of time (seventh to ninth centuries); and in later periods (tenth to eleventh centuries), mainly C3 plants such as wheat and barley were consumed. In general, there were no dietary differences between individuals according to sex or age. Sex-related dietary differences have only been observed in the tenth to eleventh centuries, when females consumed a more vegetarian diet and less animal protein. The higher δ 15N values in infants reflect the weaning effect, while the differences in δ 15N values between young adult men and young adult women can be explained as a physiological factor related to pregnancy or different origins. In a comparison with contemporaneous medieval populations in the northern Iberian Peninsula, both δ 13C and δ 15N values suggest similar foodstuff resources and diet among Christian and Muslim populations.  相似文献   

4.
This paper present the results of archaeobotanical analysis carried out at two open-air sites dated to the first phase of the Copper Age, “Chalcolithic” (4th to 3rd millennium cal BC) in Sardinia. The sediment was systematically floated, a total of 3142 l was sampled and 4014 charred plant remains were identified. Chalcolithic agriculture in Sardinia was primarily based on the cultivation of Hordeum vulgare, H. vulgare var. nudum and Triticum aestivum/durum. Possible cultivated legumes of Vicia/Lathyrus, Vicia/Pisum and cf. Pisum sativum were identified. Linum sp. was also present, which may have been cultivated and exploited in Sardinia by the Chalcolithic community. The diet of the Chalcolithic community was complemented by the consumption of edible fruits such as Ficus carica, Sambucus sp. and Vitis vinifera subsp. sylvestris. Typical Mediterranean shrubs such as Pistacia lentiscus, Juniperus sp., Cistus sp., Malva sp. and Thymelaea hirsuta were also found.  相似文献   

5.
Multiple discriminant functions that estimate sex from the dimensions of the basal occipital have been published. However, as there is limited exploration of basal dimension variation between groups, the accuracy of these functions when applied to archaeological material is unknown. This study compares basal dimensions between four known sex-at-death post-medieval European samples and explores how metric differences impact on the accuracy of sex assessment discriminant functions. Published data from St Bride’s, London (n = 146) and the Georges Olivier collection, Paris (n = 68) were compared with new data from the eighteenth to nineteenth century Dutch Middenbeemster sample (n = 74) and the early twentieth century Rainer sample, Romania (n = 282) using independent t tests. The Middenbeemster and Rainer data were substituted into six published discriminant functions derived from the St Bride’s and the Georges Olivier samples, and the results were compared to their known sex. Multiple statistically significant differences were found between the four groups. Of the six discriminant functions tested, five failed to reach the published accuracy and fell below chance. In addition, even where the samples were statistically comparable in means, trends for difference also impacted the accuracy of discriminant functions. Enough variation in basal occipital dimensions existed in the European groups to decrease the accuracy of sex estimation discriminant functions to unusable. Possible inter-observer error, varying genetic, socioeconomic, and geographical factors are likely causes of dimension variation. This research further highlights the dangers of using sex estimation discriminant functions on samples that differ to the original derivative population and demonstrates the need for more rigorous testing.  相似文献   

6.
Advocates of traditional, agriculture-based models of sociopolitical evolution argue that the adoption of domesticates is requisite for developments such as sedentism, village life, ascribed status, hereditary leadership, and other features that underpin institutionalized political complexity. We counter in this essay with a well-documented suite of politically complex hunter-gatherer (CHG) societies that exhibit these same features, thereby demonstrating that reliance on agriculture per se—or any other specific food regime such as fishing—should be excised from explanations of emergent political complexity. Despite the failure of the agricentric model to account for a significant number of cases of institutionalized complexity, some of its architects remain entrenched in their disbelief and rigidly ignore the implications of CHG studies. By continuing to situate farming as foundational to everything complex, they perpetuate not only a story of human cultural evolution over the last 10,000 years that is incomplete but also a narrative that is incorrect. We reject subsistence (domesticates) as the central organizing principle and introduce here a new forum for thinking about how societies operate and evolve. We propose a model consisting of integrated platforms of societal dynamics that are inclusive (encourage discourse of all societies), nonprogressive, and serve as an organizational structure to discuss cultural evolution in any comparative or singular ethnographic context. The platforms are nonhierarchical and not fixed in order or importance. They are (1) agency and authority, (2) social differentiation, (3) participation in communal events, (4) organization of production, (5) labor obligations, (6) articulation of ecology and subsistence, and (7) territoriality and ownership. All sociopolitical cases and all topics can be productively discussed on these platforms, from bands to the largest empires, comparatively or diachronically. In the present article, we use the platforms to examine political evolution. We assemble considerable evidence that a variety of dietary regimes are associated with the emergence of institutionalized political complexity. Rather than diet, it is the ways people integrate and use labor that demands our attention.  相似文献   

7.
Evidence of human activity and hominin remains are very scarce inland on the Iberian Peninsula. This fact raises the issue of the scarcity of evidence that Paleolithic Homo sapiens occupied this area outside of the littoral margins (Atlantic, Cantabrian, and Mediterranean coasts). Here, we comparatively describe a human right adult navicular bone recovered in the Cueva de los Torrejones site, located in the village of Tamajón (Guadalajara, Spain). This fossil was preliminarily established as belonging to Homo cf. neanderthalensis, due to the late Pleistocene faunal association, mainly because of the presence of Crocuta crocuta and Panthera pardus. The metrical and morphological study of the navicular T93-S3.27 from Cueva de los Torrejones clearly differentiates it from Neandertals and their ancestors, the hominins from Sima de los Huesos, allowing for this fossil to be taxonomically assigned with confidence as H. sapiens. The navicular from the Cueva de los Torrejones is absolutely and relatively medio-laterally narrow with a low wedging index as those of fossil and modern H. sapiens, and clearly different of Neandertals. The increased discoveries and publications of new naviculars belonging to genus Homo, together with the findings of P. pardus and C. crocuta in more recent chronologies in the Iberian Peninsula, are compatible with this reevaluation. We propose a probable chronology for this fossil between 12 and 15 ka and ca. 25 ka, based on the biostratigraphy and the oldest presence of H. sapiens in the Iberian Peninsula. This work confirms the human presence within the Iberian Peninsula during the Upper Paleolithic and reopens the question of the peopling of the inner Peninsula during this period.  相似文献   

8.
Echinochloa was an important prehistoric food crop of early agriculture in Asia. Macro-remains can be used to identify Echinochloa. However, when few macro-remains are available, phytolith analysis can be performed. In this study, we examined the phytolith morphology of the glumes, lemmas, and paleas from the inflorescence bracts of nine Echinochloa species from different regions of China and obtained diagnostic, morphological, and morphometric characteristics for Echinochloa. Phytoliths in Echinochloa are different from those in most known crops except those in Setaria italica and Panicum miliaceum. We found the following two diagnostic features within an epidermal silica layer that can be used to distinguish Echinochloa sp. from S. italica and P. miliaceum: (1) the β-type undulated patterns with constricted top of the undulation amplitude and (2) the discriminant functions based on the morphometric data of the β-type undulated patterns, which suggested that 94.9 % of the cross-validated data were correctly classified into Echinochloa, S. italica, and P. miliaceum. Thus, we established the phytolith identification criteria for Echinochloa; this could have important implications in plant taxonomy, archaeobotany, and plant domestication.  相似文献   

9.
The Gumugou Cemetery is located in the Lop Nor region of the Tarim Basin in Xinjiang, northwest China. Radiocarbon dating found the site to be 3800 years BP. Due to the exceptionally arid conditions, most of the plant remains are well-preserved. Morphological and anatomical studies suggest that the plant remains consist of: Triticum cf. aestivum, Phragmites australis, Populus euphratica, Ephedra sp., as well as Typha sp. These ancient plants imply that the indigenous people lived in oases surrounded by extensive desert. Caryopses of T. cf. aestivum might have been used as funeral objects of the mummies as well as a subsidiary food source of the inhabitants, while the wild plants were used in other aspects of daily life.  相似文献   

10.
The goal of this paper is to assess the variation in the proportional contribution of diverse resources to the diet of human populations from northwest Patagonia (Argentina) throughout the Middle-Late Holocene. Particularly, we assessed the variation among three geographic areas and two periods. We first estimated the expected proportions of terrestrial animals and plants and aquatic resources for each area according to the Binford’s frames of references approach. A Bayesian mixing method was then applied to calculate the proportion of plants and animals in the diets from stable isotopes (δ13C and δ15N) of human bone collagen. The isotope values suggest that the composition of diets differed spatially and temporally. Diets of South Mendoza were mainly composed of terrestrial animals (Rhea-Lama and rodents) with a greater incorporation of C3 plants towards the later Late Holocene; in North Neuquén, Rhea and Lama represent a proportion of 0.84 of the diet consumed; and finally, the sample of Center Neuquén is the only one with high values of Araucaria in the diet. The isotopic values obtained for the three studied areas did not fit to the expectations of Binford’s model, North Neuquén being the area that departs most from the predicted proportions of terrestrial animals and plants and aquatic organisms in the diet. These findings open up new questions about the local conditions that influenced regional variation in the diet of prehistoric hunter-gatherers.  相似文献   

11.
We report a successful extraction and sequencing of ancient DNA from carbonized rice grains (Oryza sativa) from six archaeological sites, including two from India and four from Thailand, ranging in age from ca. 2500 to 1500 BP. In total, 221 archaeological grains were processed by PCR amplification and primary-targeted fragments were sequenced for comparison with modern sequences generated from 112 modern rice populations, including crop and wild varieties. Our results include the genetic sequences from both the chloroplast and the nuclear genomes, based on four markers from the chloroplast and six from the nuclear genome. These markers allow differentiation of indica rice from japonica rice, the two major subspecies of Asian rice (O. sativa) considered to have separate geographical origins. One nuclear marker differentiates tropical and temperate forms of subspecies japonica. Other markers relate to phenotypic variation selected for under domestication, such as non-shattering, grain stickiness (waxy starch) and pericarp colour. Recovery and identification of sequences from nuclear markers was generally poor, whereas recovery of chloroplast sequences was successful, with at least one of four markers recovered in 61 % of archaeological grains. This allowed for successful differentiation of indica or japonica subspecies variety, with japonica identified in all the Thai material and a mixture of indica and japonica chloroplasts in the two Indian assemblages. Rice subspecies was also assessed through conventional archaeobotanical methods relying on grain metrics, based on measurements from 13 modern populations and 499 archaeological grains. Grain metrics also suggest a predominance of japonica-type grains in the Southeast Asian sites and a mixture of japonica and indica in the Indian sites with indica in the minority. The similar results of grain metrics and ancient DNA (aDNA) affirm that grain measurements have some degree of reliability in rice subspecies identification. The study also highlights the great potential of ancient DNA recovery from archaeological rice. The data generated in the present study adds support to the model of rice evolution that includes hybridization between japonica and proto-indica.  相似文献   

12.
Three different lithotype groups have been recognized in representative fragments of pietra ollare artefacts found in the mediaeval archaeological excavations of Comacchio (Italy). Petrographic, mineralogical and chemical compositions clearly show that Valchiavenna and Valmalenco, in the Central Alps, represent the provenance areas of two of the pietra ollare groups, i.e. grey carbonate talc schist (also known as soapstone) and green chlorite schist, respectively. The third representative pietra ollare group consists of whitish-yellowish rocks inferred to be Alpine talc schists that have suffered some artificial pyrometamorphic transformation hindering their classification in the framework of pietra ollare lithotype categories and source localities reported in literature. A distinguishing feature of these high temperature-fired (HT-fired) talc schist samples is the occurrence of talc and chlorite dehydroxylation and subsolidus reaction products, mainly protoenstatite/enstatite + forsterite, together with relatively low loss on ignition values. These talc schists might have been exposed to temperatures >900 °C (with the resulting talc dehydroxylation producing a void-rich texture), but never reaching 1200 °C, which is the sintering temperature for soapstones. The whitish-yellowish artefacts were definitely not used as containers for cooking food at temperatures below or around 500–600 °C (as instead shown by the preservation of the original physical features of the grey pietra ollare lithotypes), but in some kind of higher-T pyrotechnological processes.  相似文献   

13.
Results derived from the analysis of small carnivores from a burial chamber at the Late Neolithic Çatalhöyük (TP Area) shed light on the socioeconomic significance of stone martens (Martes foina), red foxes (Vulpes vulpes), and common weasels (Mustela nivalis). All of these are fur-bearing animals, though only the stone marten remains to show evidence that this animal was exploited for its pelt. The evidence consists of the observed skeletal bias (only the head parts and foot bones were present) and skinning marks. Two of five sets of articulated feet are most likely linked with an almost completely preserved human infant skeleton, one of two well-preserved skeletons that were interred on the burial chamber floor. In contrast to these, other human skeletons were found mostly incompletely preserved, though with evidence of articulation. It seems that the articulated forepaws were deliberately incorporated into the structure, most likely as a part of burial practice and ritual behavior. These distinctive deposits, along with rich grave goods, emphasize the uniqueness in the entire Anatolian Neolithic of the assemblage from the burial chamber, which is decorated by a panel incised with spiral motifs.  相似文献   

14.
The Southern Indian Neolithic-Iron Age transition demonstrates considerable regional variability in settlement location, density, and size. While researchers have shown that the region around the Tungabhadra and Krishna River basins displays significant subsistence and demographic continuity, and intensification, from the Neolithic into the Iron Age ca. 1200 cal. BC, archaeological and chronometric records in the Sanganakallu region point to hilltop village expansion during the Late Neolithic and ‘Megalithic’ transition period (ca. 1400–1200 cal. BC) prior to apparent abandonment ca. 1200 cal. BC, with little evidence for the introduction of iron technology into the region. We suggest that the difference in these settlement histories is a result of differential access to stable water resources during a period of weakening and fluctuating monsoon across a generally arid landscape. Here, we describe well-dated, integrated chronological, archaeobotanical, archaeozoological and archaeological survey datasets from the Sanganakallu-Kupgal site complex that together demonstrate an intensification of settlement, subsistence and craft production on local hilltops prior to almost complete abandonment ca. 1200 cal. BC. Although the southern Deccan region as a whole may have witnessed demographic increase, as well as subsistence and cultural continuity, at this time, this broader pattern of continuity and resilience is punctuated by local examples of abandonment and mobility driven by an increasing practical and political concern with water.  相似文献   

15.
This paper looks at the ancient Jewish talmudic literature (4th-7th centuries CE) for information about fish and fish products in the ancient world and compares it with information from classical sources and from archaeology. Analysis of the texts show that information about food, and particularly fish and fish products, can be derived from texts originally written as religious regulations and moral narratives. Talmudic textual evidence, backed up by parallel archaeological finds, documents long-distance transport of preserved fish, including what is identified as Nile perch from Egypt and mackerel from Spain. Parallel papyrological evidence testifies to the import of the parrot wrasse. Graeco-Roman allec, a sauce made of macerated tiny fish, is identified by the Palestinian Talmud with tarit terufah, made of tiny chopped fish, and afitz, cf Greek afye, immature fish, often cooked as such. Remains of allec have been found archaeologically in Israel/Palestine. The Palestinian Talmud identifies tarit[a] with tza?ana, one of a trio of strong-smelling Babylonian fish-dishes eaten by the poor: the others are gildana and harsana. The varied material on these discussed here adds to our knowledge of ancient salted and/or fermented fish-dishes. The identification of tza?ana with 9th-to-10th century ?a?na from Baghdad of the Caliphs and 14th-century Cairo appears very likely. Thus tarit/tza?ana/?a?na appears to have been not very appetising processed fish food for the poor in Roman Palestine, Jewish Babylonia, Baghdad of the Abbasid Caliphs and Mamluk Egypt, and it may be identified with allec. The talmudic literature also discusses reasons for failure of the preservation processes, as well as of potentially lethal effects of insufficient preservation.  相似文献   

16.
Many ruins dating back to the Neolithic Age have been unearthed at Yenikap? during the archaeological excavations carried out as part of the Marmaray Metro Project. Wood samples of these ruins were sectioned via freezing sliding microtome. These sections became permanent slides and they were compared with reference to slides, wood identification atlases and books in order to identify their taxa. Only 240 samples could be sectioned from among 430 wood samples. As a result of the identification, the following were determined: Quercus spp., Q. pontica, Juniperus spp., Ficus spp., Juglans spp., Fraxinus spp., Alnus glutinosa, Abies spp., Salix sp., Acer spp., Ulmus spp., Castanea sativa and Taxus baccata.  相似文献   

17.
In August 2017, a multidisciplinary team conducted the first archaeological survey of the deep water (242 m) wreck of the ex-USS Bugara (SS/AGSS331) using the remotely operated vehicles Argus and Hercules. The survey provided 8 h of direct observation with video and still camera documentation of the wreck, which previously had been identified by sonar and a brief ROV survey of portions of the hull in 2001. The 2017 assessment added considerably to an understanding of changes to Bugara after it sank while under tow in 1971. Bugara, a World War II-era submarine, served at the end of that conflict and through the Cold War. The submarine reflects a series of modifications to “modernize” it within the context of the Cold War. The examination of the wreck, along with additional archival research, offers more details not only on the probable cause of the sinking but also on subsequent site formation processes. The characterization of the wreck resulted in a reassessment of the site as more than an obsolete vessel accidentally lost when relegated to target practice. The archival record, now declassified, shows that Bugara’s loss also reflects its ultimate use, within the context of the Cold War, as a target for the Mark 48 torpedo, a newly developed “sub and ship killing” weapon designed in the late 1960s and tested through 1971 to take out Soviet deep-diving nuclear submarines and high-performance surface ships.  相似文献   

18.
In Switzerland, a large number of Iron Age burial sites were found in the last century. Changes in living conditions and socio-cultural behavior may have occurred over time and space and could be reflected in the dietary habits, social stratigraphy within populations and migration patterns. This study attempts to shed light on these aspects with the application of stable isotope analyses. Human remains from 11 different burial sites (n?=?164) in the area of today’s Swiss Plateau and Swiss Alpine regions were investigated. Temporal and geographical variations as well as sex and age-related dietary differences were analyzed through isotopic studies (δ13C, δ15N, and δ34S). In total, the data of 129 individuals could be evaluated. Highly significant differences between the burial sites were found, with higher δ13C and δ15N values in the Alpine regions. Cultural and/or climatic changes as well as the different geological conditions might have led to distinct patterns of crop cultivation and animal husbandry and consequently to significantly different dietary habits in the Plateau and the Alpine regions. The data indicate a higher intake of millet and animal protein including early dairy production in the southern regions, probably influenced by the Mediterranean world. Cultural exchange between geographical regions might have been facilitated by migration during the Iron Age as suggested by the δ34S.  相似文献   

19.
The aim of this archaeobotanical and archaeological research is to expand knowledge about Roman diet and plant cultivation in Istria and to compare it with similar localities on the Eastern Adriatic coast. We have also tried to find some new information about maritime trade routes in the Mediterranean area in ancient times. Out of 27 samples collected from an excavated Roman port in Flacius Street in Pula, in total, 9809 plant macrofossils were recovered, identified and analysed. The results of the analysis show that most of the plant remains belong to the group of fruit trees and nuts. The most abundant are the remains of Ficus carica, Pinus pinea, Vitis vinifera subsp. vinifera, Rubus fruticosus agg. and Olea europaea subsp. europaea. These are all species that are widespread in the Mediterranean area and have likely always been consumed by the local population. The number of ruderal and weed species found is relatively high (31) in comparison with other plant categories (fruit trees and nuts; fruit collected from the wild; cereals; condiments; oil crops; vegetables and tubers; plants of fresh water environments; elements of maquis), but as they came to the site accidentally and not by targeted human activity, there are far fewer macrofossils of such plants than those of cultivated species. There were a few elements of evergreen forest vegetation and plants of aquatic habitats at the site (2 + 1), which suggests the existence of this type of vegetation in the area of the site in Roman times. Archaeobotanical comparisons of the site in Flacius Street with similar coastal Roman sites—Verige Bay on Veli Brijuni (first-fifth century ad), the port of Zaton near Nin (first-third century ad) and Caska Bay on the island of Pag (first and second century ad)—reveal considerable similarities, confirming the uniformity in nutrition and plant growth in the wider coastal area. Together with the two Roman ships, during the archaeological excavations of the Roman harbour and its layers, we collected over 2000 different archaeological artefacts out of which a large number was almost perfectly preserved. Some of the mentioned artefacts include ceramic amphorae, ceramic table- and kitchenware, ceramic lamps, different usable objects made of glass, wooden use objects, parts of ship’s equipment and other wooden tools, architecture elements from the nearby port as well as residential structures and remains of stone monuments. Because of the large amount of artefacts found at the site, the analysis of the artefacts and data processing are still in progress. As a contribution for recognizing organic remains, we isolated the amphorae whose purpose was the storage and maritime transportation of different food products and ingredients.  相似文献   

20.
Moseley’s (1975) Maritime Foundations of Andean Civilization hypothesis challenges, in one of humanity’s few pristine hearths of civilization, the axiom that agriculture is necessary for the rise of complex societies. We revisit that hypothesis by setting new findings from La Yerba II (7571–6674 Cal bp) and III (6485–5893 Cal bp), Río Ica estuary, alongside the wider archaeological record for the end of the Middle Preceramic Period on the Peruvian coast. The La Yerba record evinces increasing population, sedentism, and “Broad Spectrum Revolution” features, including early horticulture of Phaseolus and Canavalia beans. Yet unlike further north, these changes failed to presage the florescence of monumental civilization during the subsequent Late Preceramic Period. Instead, the south coast saw a profound “archaeological silence.” These contrasting trajectories had little to do with any relative differences in marine resources, but rather to restrictions on the terrestrial resources that determined a society’s capacity to intensify exploitation of those marine resources. We explain this apparent miscarriage of the Maritime Foundations of Andean Civilization (MFAC) hypothesis on the south coast of Peru by proposing more explicit links than hitherto, between the detailed technological aspects of marine exploitation using plant fibers to make fishing nets and the emergence of social complexity on the coast of Peru. Rather than because of any significant advantages in quality, it was the potential for increased quantities of production, inherent in the shift from gathered wild Asclepias bast fibers to cultivated cotton, that inadvertently precipitated revolutionary social change. Thereby refined, the MFAC hypothesis duly emerges more persuasive than ever.  相似文献   

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