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   14063篇
  免费   464篇
各国政治   817篇
工人农民   578篇
世界政治   1077篇
外交国际关系   678篇
法律   7827篇
中国共产党   3篇
中国政治   103篇
政治理论   3309篇
综合类   135篇
  2023年   79篇
  2021年   82篇
  2020年   190篇
  2019年   254篇
  2018年   387篇
  2017年   404篇
  2016年   455篇
  2015年   283篇
  2014年   303篇
  2013年   1822篇
  2012年   398篇
  2011年   391篇
  2010年   329篇
  2009年   353篇
  2008年   452篇
  2007年   456篇
  2006年   454篇
  2005年   408篇
  2004年   416篇
  2003年   360篇
  2002年   370篇
  2001年   369篇
  2000年   362篇
  1999年   298篇
  1998年   197篇
  1997年   206篇
  1996年   180篇
  1995年   160篇
  1994年   167篇
  1993年   187篇
  1992年   250篇
  1991年   260篇
  1990年   237篇
  1989年   233篇
  1988年   223篇
  1987年   219篇
  1986年   226篇
  1985年   202篇
  1984年   195篇
  1983年   196篇
  1982年   123篇
  1981年   121篇
  1980年   95篇
  1979年   129篇
  1978年   96篇
  1977年   95篇
  1976年   75篇
  1975年   74篇
  1974年   91篇
  1973年   83篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
161.
162.
163.
164.
165.
166.
167.
This study investigated the impact of the abolition of the tender years doctrine on custody decisions in divorce cases. This doctrine supported the presumption that the mother is the more suitable parent for young children. In March of 1981, the Supreme Court of the State of Alabama found this doctrine to be unconstitutional. To assess the hypothesis that this ruling had a significant effect on custodyrelated decisions, a sample of court records for divorce cases in an Alabama county was examined as representative of the state on a number of key variables. Overall, no significant differences were found on indicator variables for the comparisons before and after the ruling. There was neither an increase in custody grants to fathers nor an increase in custody requests by fathers.  相似文献   
168.
169.
In the summer of 1984, police in Pinellas County, Florida, confiscated six identically colored imported Asian skulls (in a shipping case) from a private citizen. In May 1988, in nearby Hillsborough County, police confiscated a very similar skull from another private citizen, who allegedly had found it in an abandoned house. Aside from slight color differences between the six found in Pinellas County and the one found in Hillsborough County, the skulls are virtually identical in their osteological characteristics and condition and in the vital statistics derived from each. Each skull is as clean and dry as those typically sold by commercial scientific supply outlets in the United States. Each is edentulous (primarily premortem), between approximately 20 and 60 years of age at death, and morphologically Asian. Five of the seven are morphologically male, one is morphologically female, and one is a mosaic with respect to gender-related features. Police, medical examiners, coroners, and forensic anthropologists should be aware of such "souvenir" specimens, in the event that they encounter similar skulls. Discriminant function analyses for race and sex yield considerably conflicting results, which underscores the need for using extreme caution when interpreting forensic science estimates based on such techniques.  相似文献   
170.
Two infants aged 4 1/2 and 8 months are reported to have been exposed to overheating by an electric blanket and a heating fan in bed for a period of up to approx. 19 hours. Dehydration complicated the effects of overheating. Due to the case history in combination with the autopsy and histological findings as well as the absence of toxicological findings the following diagnosis could be established: "Death from exhaustion as a consequence of long-lasting heat effect and dehydration." The necessity of thorough investigations in causes of death during infancy is shown by means of the two cases above. If possible, the rectal temperature should already be taken by the coroner. The public should get informed about the risks caused by the use of electric cushions, heating fans as well as floorboard heating.  相似文献   
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