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   5878篇
  免费   286篇
  国内免费   1篇
各国政治   364篇
工人农民   26篇
世界政治   671篇
外交国际关系   832篇
法律   2570篇
中国共产党   392篇
中国政治   683篇
政治理论   253篇
综合类   374篇
  2023年   34篇
  2022年   33篇
  2021年   23篇
  2020年   36篇
  2019年   41篇
  2018年   61篇
  2016年   39篇
  2015年   39篇
  2014年   180篇
  2013年   134篇
  2012年   370篇
  2011年   363篇
  2010年   208篇
  2009年   191篇
  2008年   263篇
  2007年   307篇
  2006年   289篇
  2005年   283篇
  2004年   252篇
  2003年   293篇
  2002年   285篇
  2001年   202篇
  2000年   187篇
  1999年   128篇
  1998年   102篇
  1997年   95篇
  1996年   77篇
  1995年   107篇
  1994年   99篇
  1993年   69篇
  1992年   64篇
  1991年   66篇
  1990年   58篇
  1989年   67篇
  1988年   107篇
  1987年   87篇
  1986年   90篇
  1985年   102篇
  1984年   95篇
  1983年   100篇
  1982年   67篇
  1981年   64篇
  1980年   94篇
  1979年   42篇
  1977年   23篇
  1973年   18篇
  1964年   23篇
  1962年   18篇
  1959年   16篇
  1957年   16篇
排序方式: 共有6165条查询结果,搜索用时 265 毫秒
111.
Lacayo R 《Time》1995,146(14):40-43
  相似文献   
112.
113.
"Social and economic indicators depict Mexico as a country of intermediate development. It is also in intermediate stages of demographic and epidemiologic transitions. When these traits are translated into socio-demographic perspectives, all projections indicate that for the next fifty years we can expect: (i) percentage decreases in child and teen-age populations, (ii) large percentage and absolute increases in adult population, and (iii) important increases in the elderly population.... Among elders death due to infectious diseases is less common than within other sectors of [the] population. Mortality associated with chronic ailments has increased, with recent and remarkable changes during the last twenty years. This transformation is not evenly distributed. It is more accelerated in developed and urban areas as contrasted with the rural and less developed." (SUMMARY IN ENG)  相似文献   
114.
115.
116.
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   
117.
118.
"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   
119.
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   
120.
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