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   67534篇
  免费   3305篇
各国政治   4572篇
工人农民   2867篇
世界政治   6009篇
外交国际关系   3873篇
法律   31102篇
中国共产党   9篇
中国政治   763篇
政治理论   20701篇
综合类   943篇
  2021年   405篇
  2020年   1161篇
  2019年   1529篇
  2018年   1672篇
  2017年   1962篇
  2016年   2168篇
  2015年   1835篇
  2014年   2112篇
  2013年   10641篇
  2012年   1569篇
  2011年   1694篇
  2010年   1819篇
  2009年   2075篇
  2008年   1728篇
  2007年   1694篇
  2006年   1871篇
  2005年   1755篇
  2004年   1669篇
  2003年   1456篇
  2002年   1504篇
  2001年   1428篇
  2000年   1234篇
  1999年   1131篇
  1998年   1089篇
  1997年   973篇
  1996年   943篇
  1995年   918篇
  1994年   911篇
  1993年   943篇
  1992年   923篇
  1991年   951篇
  1990年   899篇
  1989年   946篇
  1988年   941篇
  1987年   970篇
  1986年   924篇
  1985年   1025篇
  1984年   912篇
  1983年   972篇
  1982年   885篇
  1981年   843篇
  1980年   658篇
  1979年   676篇
  1978年   592篇
  1977年   527篇
  1976年   491篇
  1975年   407篇
  1974年   411篇
  1973年   426篇
  1972年   367篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
311.
312.
313.
314.
The Tax Reform Act of 1986 rewrote the federal income tax code, bringing it closer to policy professionals' vision of what constitutes an equitable and efficient income tax. Research on tax compliance suggests the law might have affected taxpayer compliance in three ways: by reducing opportunities to overstate deductions, by changing perceptions of fairness, and by altering tax liabilities. Changes in taxpayer perceptions, attitudes, and noncompliance intentions were examined in three bodies of survey data, each containing pre-and post-reform data from independent samples of the same population. The results show an improved normative climate for taxpayer compliance and point to both the feasibility and the importance of examining the effects of substantive tax policies on taxpayer perceptions, attitudes, and behavioral intentions.  相似文献   
315.
Lancaster  Thomas D. 《Publius》1997,27(4):115-134
Acknowledging Spain's diversity, this article assesses the impactof nationalism, regionalism, and other factors on public opinionabout the country's young democratic institutions. Utilizingsurvey data, the analysis focuses on national and regional variationsin public preferences for central state institutions and federalistor other designs for state-regional relations. It concludesthat a strong base of support exists for the current democraticsystem and the institutions through which it is implemented.Nevertheless, some doubts remain about the basic state structureof central-regional relations.  相似文献   
316.
317.
Correlation between plasma and bone marrow tricyclic antidepressants has not been studied before. Two groups of rabbits were given 10 and 20 mg of desipramine/kg body weight, respectively. Desipramine was administered to the animals once daily by mouth for 5 days. On the fifth day the animals were sacrificed and blood and bone marrow samples were collected and analyzed using a high performance liquid chromatographic (HPLC) method. Data showed that a correlation exists between bone marrow and blood desipramine. The bone marrow desipramine concentration increased as its blood levels increased. The average ratio of bone marrow to blood desipramine +/- S.D. (standard deviation) in both dosage groups was 37.2 +/- 4.46 with a range of 30.99-44.82. This investigation is promising and shows that bone marrow could be used as an alternative tissue in the absence of a suitable blood sample.  相似文献   
318.
319.
320.
This paper addresses two neglected areas in the research on the relationship between family violence and violence outside the home: violence other than parent-child abuse and the effect of gender. Specifically, we consider both parental and sibling violence as independent variables, nonfamily violence as the dependent variable, and gender as the specification variable. The data were collected from a sample of 306 students in Introductory Sociology and Social Problems classes. The finding of particular importance is that the interaction between the gender of both the aggressor and the victim has a significant effect on the relationship between violence within the home and nonfamily violence.  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