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   31569篇
  免费   1440篇
各国政治   1322篇
工人农民   1335篇
世界政治   2388篇
外交国际关系   1062篇
法律   20174篇
中国共产党   3篇
中国政治   167篇
政治理论   6306篇
综合类   252篇
  2021年   157篇
  2020年   581篇
  2019年   636篇
  2018年   827篇
  2017年   878篇
  2016年   983篇
  2015年   705篇
  2014年   803篇
  2013年   3251篇
  2012年   805篇
  2011年   847篇
  2010年   803篇
  2009年   850篇
  2008年   860篇
  2007年   877篇
  2006年   871篇
  2005年   758篇
  2004年   778篇
  2003年   699篇
  2002年   717篇
  2001年   1174篇
  2000年   1084篇
  1999年   875篇
  1998年   485篇
  1997年   384篇
  1996年   366篇
  1995年   372篇
  1994年   396篇
  1993年   367篇
  1992年   563篇
  1991年   601篇
  1990年   572篇
  1989年   561篇
  1988年   553篇
  1987年   549篇
  1986年   584篇
  1985年   581篇
  1984年   494篇
  1983年   475篇
  1982年   395篇
  1981年   366篇
  1980年   303篇
  1979年   425篇
  1978年   259篇
  1977年   219篇
  1976年   193篇
  1975年   205篇
  1974年   239篇
  1973年   183篇
  1972年   182篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
141.
A 22-year-old Korean soldier, who had received blows to the neck and epigastrium from an officer 10 h earlier, suddenly died after massive hematemesis. He had been in relatively good health except for episodes of blood-tinged vomiting approximately 5 and 7 months prior to this event. Postmortem examination revealed angiodysplasia involving the gastroesophageal junction, and the stomach was distended with blood. No abnormal findings were present around the whole viscera, and the duodenum was free of blood. The pathologic significance of upper gastrointestinal angiodysplasia as a potential source of bleeding and a chronologic correlation between the trauma and bleeding are discussed.  相似文献   
142.
143.
European Journal of Law and Economics - In this article I try to find answers for three questions: Which functions are exercised by the Court of Audit in the Netherlands, and what kinds of...  相似文献   
144.
The primary aim of this paper is to review the literature on preadolescent friendships in order to examine the relationship between preadolescent friendships and social support in adulthood. Social supports are important to health, both directly and as a stress buffer. Few studies, however, have specifically examined adult social supports from the perspective of their developmental precursors and critical developmental periods. Some data indicate that the preadolescent period may be of particular importance to the development of adult social skills and ties. Observational and empirical studies of preadolescent peer relationships, and in particular best friendships, suggest unique and critical contributions to adult social relatedness. Present research is suggestive but is insufficient to validate preadolescence as a critical period in adult social relatedness. Our review has implications for better understanding the mechanisms by which preadolescent friendships effect adult social support—an important mediator of the effects of stress on health. Further longitudinal study is needed.Received Ph.D. from University of Maryland. Research interests are social supports and psychological responses to trauma and disaster.Received M.D. from Yale University. Research interests are social supports and traumatic stress.  相似文献   
145.
146.
De Vault  James M. 《Public Choice》2002,110(1-2):1-22
This study examines the unfair trade decisions of the InternationalTrade Commission (ITC) and how they have been affected by Congress.It begins by identifying the means Congress can use to influenceITC decisions and then estimates both the extent to which thesemeans have been used and the extent to which they have shaped theITC's behavior. The study reaches two conclusions. First, Congresshas tried to shape the ITC's behavior, but it has not tried tomicromanage this behavior. Second, while the ITC's behavior hasbeen influenced by Congress, congressional influence is not asimportant as other factors, such as statutory criteria.  相似文献   
147.
148.
149.
150.
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