全文获取类型
收费全文 | 74141篇 |
免费 | 3288篇 |
专业分类
各国政治 | 4525篇 |
工人农民 | 3011篇 |
世界政治 | 6570篇 |
外交国际关系 | 3873篇 |
法律 | 36545篇 |
中国共产党 | 11篇 |
中国政治 | 768篇 |
政治理论 | 21176篇 |
综合类 | 950篇 |
出版年
2021年 | 417篇 |
2020年 | 1174篇 |
2019年 | 1521篇 |
2018年 | 1738篇 |
2017年 | 2047篇 |
2016年 | 2218篇 |
2015年 | 1832篇 |
2014年 | 2112篇 |
2013年 | 10585篇 |
2012年 | 1766篇 |
2011年 | 1913篇 |
2010年 | 1913篇 |
2009年 | 2115篇 |
2008年 | 1907篇 |
2007年 | 1905篇 |
2006年 | 2032篇 |
2005年 | 1931篇 |
2004年 | 1811篇 |
2003年 | 1654篇 |
2002年 | 1656篇 |
2001年 | 2052篇 |
2000年 | 1743篇 |
1999年 | 1515篇 |
1998年 | 1210篇 |
1997年 | 1058篇 |
1996年 | 1016篇 |
1995年 | 979篇 |
1994年 | 1019篇 |
1993年 | 1017篇 |
1992年 | 1137篇 |
1991年 | 1181篇 |
1990年 | 1095篇 |
1989年 | 1144篇 |
1988年 | 1107篇 |
1987年 | 1126篇 |
1986年 | 1134篇 |
1985年 | 1159篇 |
1984年 | 1046篇 |
1983年 | 1108篇 |
1982年 | 957篇 |
1981年 | 909篇 |
1980年 | 721篇 |
1979年 | 805篇 |
1978年 | 638篇 |
1977年 | 581篇 |
1976年 | 543篇 |
1975年 | 462篇 |
1974年 | 466篇 |
1973年 | 460篇 |
1972年 | 407篇 |
排序方式: 共有10000条查询结果,搜索用时 21 毫秒
321.
322.
323.
324.
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
325.
326.
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
327.
328.
329.
330.
The formation of adequate mental health systems within prisons has accelerated as a result of successful class action lawsuits. Our recent national survey questioned all state correctional departments about the existence of standards in each system, compliance with such standards, prevalence of class action lawsuits involving the issue of providing adequate mental health services for inmates, issues related to consent decrees, available mental health resources within the correctional system, and the administrative structure of the mental health system. Our purpose was to identify those factors correlated with certified class action lawsuits involving issues related to mental health services. Twenty-one states were involved in such litigation. Only the presence of psychiatric hospitals operated by the department of corrections correlated with the presence of certified class action lawsuits involving mental health services. Prison systems larger than 15,000 inmates were at higher risk for such litigation. Smaller systems having psychiatric hospitals run by the state mental health agency appeared to be at less risk for such litigation. 相似文献