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   4158篇
  免费   174篇
  2020年   64篇
  2019年   98篇
  2018年   119篇
  2017年   132篇
  2016年   130篇
  2015年   77篇
  2014年   106篇
  2013年   1326篇
  2012年   95篇
  2011年   122篇
  2010年   96篇
  2009年   88篇
  2008年   77篇
  2007年   82篇
  2006年   63篇
  2005年   50篇
  2004年   57篇
  2003年   57篇
  2002年   54篇
  2001年   55篇
  2000年   66篇
  1999年   61篇
  1998年   40篇
  1997年   52篇
  1996年   40篇
  1995年   48篇
  1994年   33篇
  1993年   34篇
  1992年   22篇
  1991年   33篇
  1990年   31篇
  1989年   36篇
  1988年   30篇
  1987年   30篇
  1986年   41篇
  1985年   48篇
  1984年   45篇
  1983年   48篇
  1982年   37篇
  1981年   47篇
  1980年   40篇
  1979年   47篇
  1978年   47篇
  1977年   36篇
  1976年   41篇
  1975年   32篇
  1974年   22篇
  1973年   30篇
  1972年   23篇
  1969年   25篇
排序方式: 共有4332条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
5.
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   
6.
The Late Neolithic of southeast Hungary is known almost exclusively from excavations of large settlement mounds, or tells. Geochemical analyses of sediments collected from boreholes at small, flat Late Neolithic and Early Copper Age settlements in Hungary's Körös River basin provide data necessary to interpret the spatial organization of small settlements for the first time in this region. Principal Components Analysis of multi-element data produced a workable number of variables. Spatial analyses of these components via interpolation in ArcGIS 9 identified specific task areas, and when combined with sediment characterizations, phosphate ‘spot-tests’ and pH, suggest long-term cultural traditions in the location of activity zones within small farmsteads. The results demonstrate the usefulness of multi-element geochemistry as an intra-site prospection method.  相似文献   
7.
8.
9.
ABSTRACT. This paper uses a large data base to study metropolitan labor demand functions. The data are disaggregated by two-digit SICs in manufacturing for SMS As, and are corrected for changing SMSA boundaries. Labor demand elasticities are estimated for factor and commodity prices, transportation costs, state and local taxes and expenditures, and production-function shifters. Estimates from different years allow one to test Le Chatelier's principle in the context of interregional change.  相似文献   
10.
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