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   12785篇
  免费   468篇
  2020年   166篇
  2019年   229篇
  2018年   258篇
  2017年   320篇
  2016年   383篇
  2015年   257篇
  2014年   232篇
  2013年   3444篇
  2012年   290篇
  2011年   343篇
  2010年   340篇
  2009年   303篇
  2008年   305篇
  2007年   260篇
  2006年   237篇
  2005年   179篇
  2004年   162篇
  2003年   158篇
  2002年   168篇
  2001年   176篇
  2000年   197篇
  1999年   236篇
  1998年   170篇
  1997年   119篇
  1996年   134篇
  1995年   134篇
  1994年   129篇
  1993年   136篇
  1992年   137篇
  1991年   104篇
  1990年   106篇
  1989年   125篇
  1988年   124篇
  1987年   138篇
  1986年   121篇
  1985年   177篇
  1984年   196篇
  1983年   202篇
  1982年   152篇
  1981年   159篇
  1980年   171篇
  1979年   157篇
  1978年   157篇
  1977年   152篇
  1976年   148篇
  1975年   162篇
  1974年   121篇
  1973年   108篇
  1972年   89篇
  1971年   86篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
Book reviews     
TRANSFORMATION SCENE: THE CHANGING CULTURE OF A NEW GUINEA VILLAGE, by Ian Hobgin. The International Library of Sociology and Social Reconstruction, Routledge and Kegan Paul, London, 1951. xiv + 326 pp. with 2 maps and 22 plates. Price 30s.

AN INTRODUCTION TO WORLD POLITICS. By Professor W. Friedmann. 2nd ed. London, 1952 (Macmillan & Co. Ltd.), pp. xiv + 384. (Maps and tables).

THE SOCIAL SERVICES OF MODERN ENGLAND. By M. Penelope Hall. Routledge, 1952. Pp. viii 332. Price 25s.  相似文献   

4.
Evidence from several disciplines supports the proposition that following the Wisconsinan and an initial but brief moist phase of the Holocene, there was a gradual drying trend in the mid-continent Prairie Peninsula that peaked about 7000 years ago, a pattern that was not reversed until about 4000 years ago. Except for minor perturbations, conditions during the past four millennia have essentially been similar to those of the present. Studies in palynology and geomorphology have shown that the climatic regimes of the early/mid Post-glacial had a marked influence on both the biota and landscape erosional patterns, especially along the margins of the Prairie Peninsula. Measurable changes in the landscape and attendant biota show a time-transgressive pattern of drought related phenomena recorded palaeo-ecologically from west to east.Few studies of archaeological sites in the Prairie Peninsula have examined the evidence in and around the sites themselves for data reflecting local environmental dynamics. In fact, earlier models proposed for explaining the evolution of food-procuring systems in eastern North America virtually ignored potential changes in the natural environment. This paper examines data from two archaeological sites along the prairie-forest border in Missouri that contain long cultural sequences. Evidence is presented that pronounced changes in the natural environment occurred and that these biophysical variables are indeed critical for understanding the evolution of food-procuring societies in the American Midwest.  相似文献   
5.
6.
7.
The Roman villa at Barnsley Park was interpreted by its excavator as a farm run by a family and a body of workers, its distinctive archaeological features being the division into three yards and the existence of a number of circular structures described as pens. An alternative hypothesis envisages a kin-group, the 'pens' being the houses associated with three farmyards. The three families are presumed to have held and worked the surrounding land in some kind of joint proprietorship. This system became Romanised as a hall-type villa designed for the occupation of some modified form of the kin-group.  相似文献   
8.
Traditional understandings of the development of the medieval English longbow and its role in the fourteenth-century ‘infantry revolution’ have recently been challenged by historians. This article responds to the revisionists, arguing based on archaeological, iconographic and textual evidence that the proper longbow was a weapon of extraordinary power, and was qualitatively different from – and more effective than – the shorter self-bows that were the norm in England (and western Europe generally) before the fourteenth century. It is further argued that acknowledging the importance of the weapon as a necessary element of any credible explanation of English military successes in the era of the Hundred Years War does not constitute ‘technological determinism’.  相似文献   
9.
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