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   71597篇
  免费   3288篇
各国政治   4531篇
工人农民   3022篇
世界政治   6160篇
外交国际关系   3865篇
法律   34686篇
中国共产党   11篇
中国政治   760篇
政治理论   20910篇
综合类   940篇
  2021年   411篇
  2020年   1177篇
  2019年   1533篇
  2018年   1739篇
  2017年   2034篇
  2016年   2240篇
  2015年   1859篇
  2014年   2114篇
  2013年   10570篇
  2012年   1718篇
  2011年   1825篇
  2010年   1875篇
  2009年   2108篇
  2008年   1849篇
  2007年   1857篇
  2006年   2034篇
  2005年   1897篇
  2004年   1772篇
  2003年   1555篇
  2002年   1642篇
  2001年   1833篇
  2000年   1585篇
  1999年   1383篇
  1998年   1145篇
  1997年   997篇
  1996年   993篇
  1995年   958篇
  1994年   954篇
  1993年   978篇
  1992年   1053篇
  1991年   1078篇
  1990年   1023篇
  1989年   1046篇
  1988年   1048篇
  1987年   1037篇
  1986年   1072篇
  1985年   1115篇
  1984年   990篇
  1983年   1010篇
  1982年   908篇
  1981年   857篇
  1980年   674篇
  1979年   744篇
  1978年   601篇
  1977年   538篇
  1976年   490篇
  1975年   423篇
  1974年   447篇
  1973年   439篇
  1972年   382篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
992.
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   
993.
994.
995.
The authors developed a method of malathion insecticide determination in the cadaveric material (blood and wall of the stomach) including extraction of 5 ml of blood (5 g of fragmented tissue of stomach wall) by hexan; preparative chromatographic purification of extract on silicagel layer L 5/40 mkm in hexan-diethyl ether system 10:2; Gas-liquid chromatographic investigation on column with 5% SE-30 and 5% XE-60 (Chromatograph "Colour-106" with thermionic detector). This method makes it possible to detect 72-76% of malathion added.  相似文献   
996.
997.
998.
999.
Certain Biblical passages if interpreted literally can be understood as advocating the use of corporal punishment in disciplining children. The purpose of this research was to determine if persons affiliated with religious denominations which emphasized a literal belief in the Bible would demonstrate less appropriate attitudes with regard to discipline than their counterparts who were affiliated with religious denominations which do not subscribe to a literal interpretation of the Bible. The sample consisted of 881 persons who were members of denominations classified as literal or nonliteral believers. Statistically significant differences were noted on the Physical Punishment Scale of the Adult Adolescent Parenting Inventory with persons, regardless of gender or their level of education, who were members of churches subscribing to a literal belief in the Bible preferring the use of corporal punishment over alternate methods of discipline as compared to their nonliteral counterparts.  相似文献   
1000.
A risk marker analysis of assaulted wives   总被引:1,自引:0,他引:1  
In the wife assault literature, a number of risk markers have been identified. Using the data of the female respondents to the National Family Violence Survey (n = 699), a multivariate analysis was performed to examine which risk factors best differentiated between women involved in nonviolent relationships, verbally aggressive relationships, relationships exhibiting minor physical aggression and severely violent relationships. High levels of marital conflict and lower socioeconomic status emerged as the primary predictors of an increased likelihood of wife assault. Research implications are discussed.  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