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   35644篇
  免费   1624篇
  国内免费   5篇
各国政治   1656篇
工人农民   1552篇
世界政治   2441篇
外交国际关系   1256篇
法律   23017篇
中国共产党   8篇
中国政治   262篇
政治理论   6785篇
综合类   296篇
  2020年   610篇
  2019年   679篇
  2018年   874篇
  2017年   977篇
  2016年   1051篇
  2015年   764篇
  2014年   848篇
  2013年   3667篇
  2012年   922篇
  2011年   985篇
  2010年   903篇
  2009年   942篇
  2008年   1011篇
  2007年   1069篇
  2006年   1050篇
  2005年   935篇
  2004年   905篇
  2003年   885篇
  2002年   851篇
  2001年   1325篇
  2000年   1150篇
  1999年   970篇
  1998年   517篇
  1997年   383篇
  1996年   428篇
  1995年   383篇
  1994年   407篇
  1993年   396篇
  1992年   629篇
  1991年   686篇
  1990年   674篇
  1989年   615篇
  1988年   665篇
  1987年   612篇
  1986年   689篇
  1985年   636篇
  1984年   528篇
  1983年   496篇
  1982年   390篇
  1981年   392篇
  1980年   299篇
  1979年   451篇
  1978年   287篇
  1977年   237篇
  1976年   208篇
  1975年   281篇
  1974年   299篇
  1973年   247篇
  1972年   216篇
  1971年   196篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
201.
202.
Those in need of employment and training programs face a variety of difficulties. Accordingly, the federal response to labor market problems has encompassed a wide range of initiatives. These include preparing people for work (through skills training, the Job Corps, work experience programs); improving the functioning of the labor market (through matching workers with jobs, establishing a minimum wage, and the Targeted Jobs Tax Credit program); and preventing discrimination. Unresolved issues in these areas are examined. They include who should be targeted for federal assistance, which levels of government can best operate programs, how public versus private efforts should be balanced, how limited resources should be distributed, and how the welfare versus work question should be resolved.  相似文献   
203.
Observations of high velocity bloodspatter on adjacent objects   总被引:1,自引:0,他引:1  
In a recent homicide investigation, high velocity backspatter was observed on the sleeve cuff of the accused. These minute droplets were discovered only after microscopic examination and were limited in number. A study was initiated to determine if these were truly backspatter droplets or transferred blood produced from light contact with a bloody item. It was observed that the backspattered blood was primarily limited to contact or near contact shots. An exception was a shot into an already bloody surface. It was found that backspattered blood would deposit on the shooter's shirt sleeve irrespective of the weave pattern. Transferred blood was observed only on the fiber tops. This information was found to be useful in reconstruction of events in suicides as well as possible homicides.  相似文献   
204.
205.
Book Reviews in This Article:
Getting Rid of Patients: Contradictions in the Socialization of Physicians . By Terry Mizrahi
Physicians and Social Change . By John Colombotos and Corinne Kirchner
Changing Values in Medicine . Edited by Eric J. Cassell and Mark Siegler
Professional Ethics and Primary Care Medicine: Beyond Dilemmas and Decorum . By Harmon L. Smith and Larry R. Churchill
Physician—Patient Decision-Making: A Study in Medical Ethics . By Douglas N. Walton
With Dignity: The Search for Medicare and Medicaid . By Sheri I. David
The Dismissal of Students with Mental Disorders. Legal Issues, Policy Considerations, and Alternative Responses .
Courtroom Toxicology . By Marshall Houts, Randall C. Baselt, and Robert H. Cravey  相似文献   
206.
207.
208.
The present study examines the extent to which neighborhood and social psychological influences predict childhood violence among 867 African‐American youth. The results showed that neighborhood affluence was the only neighborhood‐level variable to exert a significant influence on childhood violence. Furthermore, childhood violence was significantly related to social psychological influences, such as adopting a street code, associating with violent peers, parental use of violence, and quality parenting. Overall, the findings suggested that simply living in a violent neighborhood does not produce violent children, but that family, peer, and individual characteristics play a large role in predicting violence in childhood.  相似文献   
209.
210.
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