首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   360篇
  免费   16篇
  2023年   4篇
  2020年   16篇
  2019年   11篇
  2018年   14篇
  2017年   21篇
  2016年   19篇
  2015年   10篇
  2014年   14篇
  2013年   106篇
  2012年   9篇
  2011年   13篇
  2010年   9篇
  2009年   3篇
  2008年   8篇
  2007年   8篇
  2006年   6篇
  2005年   6篇
  2004年   4篇
  2001年   6篇
  2000年   4篇
  1999年   8篇
  1998年   6篇
  1997年   7篇
  1996年   4篇
  1995年   3篇
  1993年   4篇
  1992年   8篇
  1991年   2篇
  1990年   2篇
  1989年   3篇
  1988年   3篇
  1985年   2篇
  1984年   3篇
  1983年   2篇
  1980年   3篇
  1979年   1篇
  1978年   2篇
  1977年   1篇
  1976年   1篇
  1974年   1篇
  1973年   2篇
  1967年   2篇
  1965年   1篇
  1964年   1篇
  1960年   1篇
  1959年   1篇
  1956年   1篇
  1955年   2篇
  1953年   1篇
  1951年   2篇
排序方式: 共有376条查询结果,搜索用时 15 毫秒
131.
EUROPE

A Vertebrate Fauna of Forth. By L. J. Rintoul and E. V. Baxter. Edinburgh : Oliver and Boyd Ltd., 1935. Price 25s.

River Navigation in England, 1600–1750. By T. S. Wilian. London : Oxford University Press, 1936. Price 10s. 6d.

The Pastoral Heritage of Britain. By E. H. Carrier. London : Christophers, 1936. Price 10s. 6d.

The Mesolithic Settlement of Northern Europe : a Study of the Food‐Gathering Peoples of Northern Europe during the Early Post‐Glacial Period. By J. G. D. Clark. Cambridge : The University Press. Price 25s.

ASIA

Asia. Third Edition. By L. Dudley Stamp. London : Methuen and Co. Ltd., 1936. Price 27s. 6d.

Odyssey of the Islands. By C N. Taylor. London : Charles Scribner's Sons Ltd., 1936. Price 12s. 6d.

AFRICA

The Seething African Pot. By D. Thwaite. London : Constable and Co. Ltd., 1936. Price 7s. 6d.

Canoe Errant on the Nile. By R. Raven‐Hart. London : John Murray, 1936. Price 7s. 6d.

AMERICA

Tempest over Mexico. By R. E. King. London : Methuen and Co. Ltd., 1936. Price 10s. 6d.

Londoner's New York. By E. S. Fay. London : Methuen and Co. Ltd., 1936. Price 8s. 6d.

AUSTRALASIA

Central Australia. By C. T. Madigan. London : Oxford University Press, 1936. Price 12s. 6d.

Papuan Epic. By K. Bushell. London : Seeley, Service and Co. Ltd. 1936. Price 12s. 6d.

New Zealand: A Short History. By J. C. Beaglehole. London : George Allen and Unwin Ltd., 1936. Price 3s. 6d.

OCEANIA

POLAR

Cradle of the Storms. By B. R. Hubbard. London : George G. Harrap and Co. Ltd., 1936. Price 8s. 6d.

GENERAL

British Regional Geology : The Pennines and Adjacent Areas. By Dr. D. A. Wray. London : H.M. Stationery Office, 1936. Price 1s. 6d.

Trees of Britain. By B. Briggs. London : The Lutterworth Press, 1936. Price 21s.

(7) Wild Flowers of the Wayside and Woodland. Compiled by T. H. Scott and W. J. Stokse. London : Frederick Warne and Co. Ltd., 1936. Price 7s. 6d.

EDUCATIONAL

The Economic Geography of the British Empire. By R. Ogilvie Buchanan. University of London Press Ltd., 1935. Price 6s.  相似文献   
132.
Prince Kaunitz and the Balance of Power; Franz A.J. Szabo

The American Revolution in an International Perspective: Views from Bicentennial Symposia; Lawrence S. Kaplan

The Reign of Sir Edward Grey as British Foreign Secretary F.H. HINSLEY, ed. British Foreign Policy under Sir Edward Grey. Cambridge: Cambridge University Press 1977. Pp. 702; ZARA S. STEINER. Britain and the Origins of the First World War. New York: St Martins Press 1977. Pp. 305.; Samuel R. Williamson, Jr  相似文献   
133.
Book reviews     

James E. McClellen III and Harold Dorn. Science and Technology in World History: An Introduction. Baltimore and London: Johns Hopkins Press, 1999.404 pages + illustrations + maps + graphs + bibliography + index. $55.00 (hardcover), $18.95 (paperback).

Arnold Pacey. Meaning in Technology (Cambridge, Mass and London, England: MIT Press, 1999), pp. viii+264.  相似文献   
134.
135.
136.
137.
138.
The remains of the Kwäd?y Dän Ts'ìnch? individual, a frozen male human, were recovered from a retreating glacier within the Tatshenshini-Alsek Park in British Columbia in August 1999. In order to provide information on both the geographical origin of this individual and low long he spent in the remote interior region prior to his death, molecular analysis and compound-specific carbon isotope analyses were performed on individual amino acids purified from his skin and bone. Gas chromatographic quantification of constituent amino acids of both tissues revealed a molecular distribution characteristic of collagen, dominated by glycine and to a lesser extent proline, hydroxyproline and alanine. Chiral gas chromatography indicated that protein preservation in both tissues was exceptional. Carbon isotope analysis of a faunal assemblage from an earlier prehistoric site from southern British Columbia provided reference dietary amino acid δ13C values for terrestrial (deer and domestic dog) and marine species (salmon and sealion), showing clear separation in all amino acids, particularly glycine which was extremely 13C-enriched in the marine animals. The distinction between terrestrial and marine organisms was increased by exploring Δ13CGlycine-Phenylalanine values (6.6 ± 0.6‰ and 15.0 ± 2.1‰, respectively), which were higher in the latter by approximately 8‰, mirroring the increased δ15NBulk collagen values observed for the marine animals (R2 = 0.78; p < 0.001). The Kwäd?y Dän Ts'ìnch? individual's bone had a similarly elevated Δ13CGlycine-Phenylalanine value of 15.6 ± 1.0‰, indicating his extreme reliance on marine dietary resources throughout early life. The skin amino acid δ13C values were consistently lower than those observed for bone, with a concurrently lower Δ13CGlycine-Phenylalanine value of 12.7 ± 0.9‰. The shift between the carbon isotope composition of bone (long-term diet) and skin amino acids (short-term diet) confirmed a sudden divergence away from marine food sources in the last months of life, consistent with his discovery 80 km inland.  相似文献   
139.
140.
The explosive eruption at Santorini in the Aegean Sea during the second millennium BCE was the largest Holocene volcanic upheaval in the Eastern Mediterranean region. The eruption was disastrous for the Minoan settlements at Santorini, but the effect on human society in the neighbouring islands and regions is still clouded in uncertainty. Tsunami generation was suggested, but comparatively little evidence was found. The lack of firm tsunami traces is particularly puzzling in Crete with its coastal settlements of the Late Minoan IA period, during which the Santorini eruption occurred. Here, we report the discovery of extensive geoarchaeological tsunami deposits at Palaikastro in north-eastern Crete. These deposits are characterized by a mixture of geological materials, including volcanic Santorini ash, and archaeological settlement debris. Various tsunami signatures were identified: (1) erosional contact with the underlying strata, (2) volcanic ash intraclasts in the lower part of the deposit, (3) reworked building stone material in the lower part of the deposit, (4) individual marine shells, (5) marine micro-fauna, (6) imbrication of rounded beach pebbles, settlement debris, ceramic sherds and even bones, (7) multi-modal chaotic composition. Late Minoan human settlement activities at Palaikastro provided architectural and stratigraphic frameworks in space and time that recorded and preserved tsunami evidence as geoarchaeological deposits. Such stratigraphic resolution and preservation may not occur in the natural landscape. Volcanic ash transported by wind from Santorini south-east to Crete preceded the tsunami. Geological, archaeological and radiocarbon dating criteria all converge, indicating that the tsunami deposits are coeval with the Minoan Santorini eruption. Field evidence suggests that tsunami waves at Palaikastro were at least 9 m high. Inverse tsunami modeling was attempted, based on these newly discovered tsunamigenic deposits. The initial wave in the generation region at Santorini that best fits the stratigraphic data is a wave with +35 to −15 m initial amplitude and a crest length of about 15 km.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号