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   12944篇
  免费   466篇
各国政治   838篇
工人农民   456篇
世界政治   1125篇
外交国际关系   590篇
法律   6902篇
中国共产党   2篇
中国政治   158篇
政治理论   3212篇
综合类   127篇
  2020年   164篇
  2019年   192篇
  2018年   289篇
  2017年   322篇
  2016年   356篇
  2015年   273篇
  2014年   272篇
  2013年   1689篇
  2012年   344篇
  2011年   406篇
  2010年   327篇
  2009年   360篇
  2008年   356篇
  2007年   351篇
  2006年   346篇
  2005年   313篇
  2004年   327篇
  2003年   342篇
  2002年   273篇
  2001年   422篇
  2000年   414篇
  1999年   360篇
  1998年   237篇
  1997年   175篇
  1996年   151篇
  1995年   169篇
  1994年   171篇
  1993年   165篇
  1992年   228篇
  1991年   208篇
  1990年   197篇
  1989年   200篇
  1988年   216篇
  1987年   227篇
  1986年   219篇
  1985年   217篇
  1984年   199篇
  1983年   200篇
  1982年   143篇
  1981年   120篇
  1980年   112篇
  1979年   139篇
  1978年   115篇
  1977年   99篇
  1976年   93篇
  1975年   78篇
  1974年   71篇
  1973年   72篇
  1972年   67篇
  1969年   71篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
Apology     
  相似文献   
33.
We consider the contributions made by Robert H. Bork's Coercing Virtue (2003) and Anne-Marie Slaughter's A New World Order (2004) to the ongoing debate over the citation of foreign law in United States courts. While empirically minded sociolegal scholars might be tempted to dismiss these books as mere op-eds, that would be a mistake. Taken with the spate of other recent work, they supply the makings of an agenda for rigorous research devoted to understanding the exchange of law among nations.  相似文献   
34.
35.
36.
37.
The possible contribution of poppy seed foods to positive opiate urinalysis results, especially from foods available in the Pacific Rim area, has recently become an issue for the U.S. Army Forensic Toxicology Drug Testing Laboratory in Hawaii. To assess the likelihood of this possible contribution, seven different poppy seed food products were consumed by male and female volunteers, and urine specimens were collected at time increments up to either 24 or 72 h. Specimens were evaluated for opiates using Roche Abuscreen radioimmunoassay (RIA), and all RIA positive specimens were analyzed for morphine and codeine using gas chromatography/mass spectrometry (GC-MS). Poppy seed cake, bagels, muffins, and rolls did not contain sufficient quantities of poppy seeds to give rise to opiate positive specimens by U.S. Department of Defense (DOD) GC-MS cutoff levels (morphine = 4000 ng/mL, codeine = 2000 ng/mL), although a number of specimens were positive by National Institute on Drug Abuse (NIDA) cutoff levels (morphine and codeine = 300 ng/mL). However, ingestion of poppy seed streusel or Danish pastry led to confirmed morphine and codeine positive specimens, irrespective of the use of DOD or NIDA confirmation cutoff values. In addition, significant amounts of codeine were observed in a number of these specimens. These findings argue against the unqualified application of previously published quantitative guidelines for eliminating poppy seed ingestion as a possible cause for a positive opiate urinalysis result.  相似文献   
38.
Research has indicated that school factors such as communal school organization and student bonding are predictive of school disorder, with greater communal organization and greater student bonding leading to less delinquency and victimization. Data from a nationally representative sample of 254 public, nonalternative, secondary schools were used to examine structural equation models representing hypothesized relationships among communal school organization, student bonding, and school disorder. The hypothesis that communally organized schools would have less disorder held true for teacher victimization and student delinquency, but not for student victimization. In addition, the hypothesis that the relationship between communal school organization and school disorder would be mediated by student bonding was supported for student delinquency, but not for teacher victimization.  相似文献   
39.
40.
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