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   17965篇
  免费   354篇
各国政治   772篇
工人农民   1340篇
世界政治   1024篇
外交国际关系   846篇
法律   9779篇
中国政治   85篇
政治理论   4382篇
综合类   91篇
  2023年   63篇
  2022年   46篇
  2021年   79篇
  2020年   157篇
  2019年   208篇
  2018年   1474篇
  2017年   1456篇
  2016年   1261篇
  2015年   239篇
  2014年   263篇
  2013年   1358篇
  2012年   430篇
  2011年   1173篇
  2010年   1226篇
  2009年   817篇
  2008年   990篇
  2007年   970篇
  2006年   304篇
  2005年   372篇
  2004年   494篇
  2003年   444篇
  2002年   340篇
  2001年   308篇
  2000年   255篇
  1999年   203篇
  1998年   142篇
  1997年   151篇
  1996年   146篇
  1995年   168篇
  1994年   161篇
  1993年   136篇
  1992年   170篇
  1991年   176篇
  1990年   143篇
  1989年   132篇
  1988年   148篇
  1987年   145篇
  1986年   166篇
  1985年   170篇
  1984年   146篇
  1983年   152篇
  1982年   91篇
  1981年   91篇
  1980年   58篇
  1979年   79篇
  1978年   71篇
  1977年   68篇
  1976年   48篇
  1975年   47篇
  1974年   60篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
92.
Underlying President Bush's view regarding stemcell research and cloning are two assumptions: we originate at conception, and we have full moral status as soon as we originate. I will challenge both assumptions, argue that at least the second is mistaken, and conclude that the President's approach is unsustainable.  相似文献   
93.
94.
95.
Abstract. Palle Svensson in this issue of EJPR has objected to the characterisation of Danish voters made by Franklin and others who, in various publications, expounded the thesis that on issues of low salience, referendum votes tend to follow party lines. Svensson finds evidence that the Maastricht Treaty was not an issue of low salience to Danish voters in the ratification referendums conducted there, and gives other details of the evolution of public opinion regarding Europe that clarify the circumstances in which our thesis should apply. In the light of his arguments, this Comment presents a more nuanced version of the thesis that learns from the Danish case, and should be of greater utility than our earlier version in helping to interpret the role of government standing in referendum outcomes.  相似文献   
96.
97.
98.
99.
Current research suggests that a husband's substance abuse is correlated with severity of physical abuse and the woman's decision to leave a violent situation. Often, only the battered woman's report of abuse is available. This study compares women's reports of their partners' substance use/abuse with their partners' report using a brief measure of polydrug and alcohol abuse, the Substance Abuse Subtle Screening Inventory (SASSI) and the Conflict Tactics Scale (CTS). Data were analyzed for 25 recovery couples and 25 nonrecovery couples. The correlations for all 50 couples between the male's reported use and the female's report of her partner's use on the SASSI and the CTS were significant on all but one of the CTS scales. They ranged on SASSI from .73 to .33 and from .31 to .06 on the CTS. This suggests that the SASSI and possibly the CTS could be used as valuable tools for assessing women's reports of their partner's substance use/abuse.  相似文献   
100.
Historically, small businesses have been the innovation engine of the United States, with significantly more than half of the new technologies and products coming from small enterprises. In 1992, there were more than 21 million small businesses with fewer than 500 employees each in the United States, including 4.5 million small corporations, 1.6 million partnerships, and 15.1 million sole proprietorships. Although most small businesses have considerably fewer than 100 employees, they employ more than half the private U.S. work force, contribute more than half of all sales in the country, and are responsible for over half of the private sector's products. From 1976 to 1990, small firms also generated 65% of the net new jobs. From 1988 to 1990, all of the net new jobs in the U.S. economy were created by small firms. Indeed, small business is really big business in the United States.  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