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   41923篇
  免费   1664篇
  2020年   547篇
  2019年   848篇
  2018年   944篇
  2017年   1159篇
  2016年   1229篇
  2015年   942篇
  2014年   930篇
  2013年   14256篇
  2012年   1060篇
  2011年   1082篇
  2010年   1090篇
  2009年   1079篇
  2008年   1016篇
  2007年   926篇
  2006年   828篇
  2005年   586篇
  2004年   583篇
  2003年   551篇
  2002年   522篇
  2001年   507篇
  2000年   450篇
  1999年   502篇
  1998年   455篇
  1997年   430篇
  1996年   407篇
  1995年   419篇
  1994年   365篇
  1993年   412篇
  1992年   384篇
  1991年   293篇
  1990年   288篇
  1989年   302篇
  1988年   304篇
  1987年   321篇
  1986年   296篇
  1985年   409篇
  1984年   453篇
  1983年   449篇
  1982年   397篇
  1981年   380篇
  1980年   417篇
  1979年   416篇
  1978年   408篇
  1977年   425篇
  1976年   375篇
  1975年   382篇
  1974年   285篇
  1973年   257篇
  1972年   243篇
  1970年   218篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
61.
This paper examines the comparatively patchy evidence for the pastoral provision and personal faith of late medieval Scottish combatants below the rank of knight. By examining such sources as papal supplications, royal financial accounts, parliamentary rolls, chronicles, poetry and the cartularies of Scottish monastic houses and burgh collegiate churches, it is possible to identify elite and parish provision of churchmen serving the needs of Scottish troops as they mustered, trained and prepared for battle. In addition, this evidence also highlights a number of cults and relics popular with the social ranks of the ordinary Scottish soldiery, including those of SS Ninian, Leonard, Thomas Becket, Columba, the Blessed Virgin Mary and — often cast as the nemesis of Scottish troops — Cuthbert. However, this survey also points to some tensions between the spiritual interests of Scottish servicemen and their ruling elites.  相似文献   
62.
63.
64.
65.
The concentrations of two major elements and thirteen trace elements in 73 selected sherds of fine grey ware from the Iron Age and Roman period, excavated at Conimbriga, Santa Olaia and Tavarede, Portugal, were determined by instrumental neutron activation analysis. These concentrations were used to calculate distance matrices which were then subjected to cluster analysis employing SAHN and k-means methods, as well as to principal components analysis, to group the sherds according to the overall similarity of their compositional characteristics. The results showed that equivalent groupings appeared regardless of the taxonomic method used. Two major clusters were recognized corresponding to two different sites, namely Conimbriga and Santa Olaia, suggesting that the ceramics from these sites were made locally. No significant differences in compositional patterns were observed between iron age and roman sherds from Conimbriga.  相似文献   
66.
In France, the study of history behind regional geography has suffered a long decline since the late nineteenth century, but a new historical dimension is beginning to emerge. In the nineteenth century, historians showed how much regional character owed to remains from antiquity while historical geographers traced the history of exploration and discovery from ancient to modern times. Vidal de la Blache integrated historical reconstruction with social analysis in the study of regions. Vidal's followers not only characterized the distinctiveness of regional features but also demonstrated that differences in regional ways of life were more pronounced before industrialization and urbanization than later. In the first quarter of the twentieth century, historical investigations by geographers were neither sufficiently comprehensive nor sufficiently rigorous to explain spatial patterns. Historians of the Annales school obtained deeper understandings of social and economic changes and took a broader view of long-term psychological, cultural and geographical changes. Their interpretations of agrarian structures illuminated problems fundamental to the development of European civilization. In the 1970s, reacting against mechanistic analyses of spatial organization, young scholars again turned to historical geography to examine problems of social evolution. At the moment, this revival of historical interest among geographers has not attracted much attention from historians.  相似文献   
67.
This study explores the spatial structure of retailing in Milwaukee, Wisconsin, in the era before the introduction of the electric streetcar in 1890. It uses city directory listings to chart changes in the numbers and types of retail outlets, their degree of nucleation and the functional complexity of such nucleations. The evidence suggests the early appearance of non-central retailing, the rapid dispersal of high as well as low order goods to non-central sites and the early emergence initially of a three-level and then, by 1870, a four-level hierarchy of shopping clusters. The pattern of retail clustering varied with the class and ethnic character of neighbourhoods, and clusters gravitated toward major arterial routes even in the pre-mass transit ear. Urban retailing in the second half of the nineteenth century was neither randomly dispersed nor over-whelmingly concentrated in a single central retail district, but developed a spatial hierarchy that clearly anticipated modern patterns.  相似文献   
68.
69.
70.
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