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   11068篇
  免费   298篇
各国政治   414篇
工人农民   426篇
世界政治   778篇
外交国际关系   309篇
法律   6959篇
中国政治   68篇
政治理论   2322篇
综合类   90篇
  2020年   117篇
  2019年   174篇
  2018年   220篇
  2017年   240篇
  2016年   240篇
  2015年   183篇
  2014年   194篇
  2013年   1013篇
  2012年   235篇
  2011年   275篇
  2010年   223篇
  2009年   294篇
  2008年   281篇
  2007年   279篇
  2006年   273篇
  2005年   265篇
  2004年   249篇
  2003年   264篇
  2002年   253篇
  2001年   437篇
  2000年   378篇
  1999年   302篇
  1998年   160篇
  1997年   127篇
  1996年   138篇
  1995年   134篇
  1994年   138篇
  1993年   139篇
  1992年   234篇
  1991年   255篇
  1990年   242篇
  1989年   250篇
  1988年   227篇
  1987年   223篇
  1986年   266篇
  1985年   258篇
  1984年   230篇
  1983年   217篇
  1982年   153篇
  1981年   128篇
  1980年   114篇
  1979年   152篇
  1978年   88篇
  1977年   114篇
  1976年   95篇
  1975年   73篇
  1974年   89篇
  1973年   84篇
  1972年   78篇
  1971年   69篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
191.
Tort reform is controversial because of the need to balance cost considerations with the legitimate needs of plaintiffs who have suffered malpractice injury. In addition, proponents and opponents of the different proposals often formulate their positions based largely on anecdotal evidence and concerns of special interest groups rather than careful studies. As a result, it may be some time before malpractice reform is addressed comprehensively at the federal level, leaving the states to their own reform devices.  相似文献   
192.
193.
194.
195.
196.
197.
"This work...examines the cultural dimension of sexuality and fertility of women from [low-income] sectors in Peru. It intends to explain the cultural processes that fall into the intermediate variables of fertility, such as marriage rate, contraception, breastfeeding and...abortion. These dimensions of sexual and reproductive life are analyzed according to two explanatory dimensions: generation and cultural context of socialization. The general hypothesis is that a cultural process of homogenization of the values and behaviors has been taking place over sexuality, in such a way that the younger generations will show similar standard behaviors and values no matter their context of socialization; in the meantime, in the older groups there will exist contextual differences in these dimensions." (SUMMARY IN ENG)  相似文献   
198.
199.
123 out of 850 suicides that occurred in the Canton of Geneva between 1980 and 1989 were suicides by submersion. 75 women and 48 men committed this kind of suicide. 89 victims (57 women and 32 men) were older than 40 years. In all cases the spatial distance between the residence of the suicides and the nearest river or lake was determined; a correlation with the tendency to commit suicide by drowning was not evident. More than geographical factors, the psychological influences have to be considered.  相似文献   
200.
Merrill RA 《Duke law journal》1998,47(6):1071-1094
Professor Richard Merrill contends that the Federal Food, Drug, and Cosmetic Act does not grant the FDA regulatory authority over cigarettes and smokeless tobacco products. The fact that Congress did not expressly deny the FDA regulatory authority over tobacco cannot, Professor Merrill argues, be used to infer such authority. This inference is particularly inappropriate in the case of tobacco regulation, he maintains, because there is compelling evidence that Congress had no intention of delegating this authority to the FDA. He is unpersuaded that presidential approval legally sanctions the FDA's claim of authority by granting it a superficial political legitimacy. Finally, he reminds us of the FDA's own repeated denials of jurisdiction over tobacco products, and he recalls the numerous times that Congress passed legislation directed at tobacco without granting the FDA any role in its regulation. Professor Merrill's Essay, like the other pieces in this volume, was written after the United States District Court for the Middle District of North Carolina decided Coyne Beahm v. FDA, but before a three judge panel of the United States Court of Appeals for the Fourth Circuit reversed that decision in Brown & Williamson Tobacco Corp. v. FDA. In Coyne Beahm, the District Court held that the Federal Food, Drug, and Cosmetic Act authorized the FDA to regulate tobacco products, but not tobacco advertising. The Fourth Circuit rejected the District Court's jurisdictional ruling and invalidated the FDA's regulations in their entirety. The Clinton Administration has since requested an en banc rehearing before the Fourth Circuit.  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