全文获取类型
收费全文 | 16734篇 |
免费 | 187篇 |
专业分类
各国政治 | 778篇 |
工人农民 | 1249篇 |
世界政治 | 686篇 |
外交国际关系 | 624篇 |
法律 | 10020篇 |
中国共产党 | 8篇 |
中国政治 | 29篇 |
政治理论 | 3427篇 |
综合类 | 100篇 |
出版年
2020年 | 95篇 |
2019年 | 117篇 |
2018年 | 1439篇 |
2017年 | 1368篇 |
2016年 | 1210篇 |
2015年 | 241篇 |
2014年 | 186篇 |
2013年 | 917篇 |
2012年 | 432篇 |
2011年 | 1110篇 |
2010年 | 1176篇 |
2009年 | 787篇 |
2008年 | 989篇 |
2007年 | 960篇 |
2006年 | 316篇 |
2005年 | 254篇 |
2004年 | 368篇 |
2003年 | 323篇 |
2002年 | 239篇 |
2001年 | 336篇 |
2000年 | 320篇 |
1999年 | 241篇 |
1998年 | 98篇 |
1997年 | 117篇 |
1996年 | 102篇 |
1995年 | 109篇 |
1994年 | 115篇 |
1993年 | 80篇 |
1992年 | 161篇 |
1991年 | 183篇 |
1990年 | 164篇 |
1989年 | 178篇 |
1988年 | 154篇 |
1987年 | 148篇 |
1986年 | 170篇 |
1985年 | 138篇 |
1984年 | 134篇 |
1983年 | 144篇 |
1982年 | 84篇 |
1981年 | 84篇 |
1980年 | 58篇 |
1979年 | 123篇 |
1978年 | 75篇 |
1977年 | 72篇 |
1976年 | 56篇 |
1975年 | 67篇 |
1974年 | 82篇 |
1973年 | 78篇 |
1972年 | 68篇 |
1971年 | 60篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
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
62.
63.
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
64.
W D Haglund D G Reichert D T Reay 《The American journal of forensic medicine and pathology》1990,11(1):35-43
The Green River Murder Investigation in King County, Washington, is currently the longest active serial murder investigation in U.S. history. During its course, over 26 separate scenes with from one to five victims each have been processed. The experience of the authors is presented in order to acquaint other agencies with techniques of outdoor scene processing that have evolved during recovery of remains from Green River and other skeletal cases. 相似文献
65.
66.
67.
68.
69.
Dr. Christian Schütte LL.M. 《Natur und Recht》2005,27(1):b32-b32
Ohne Zusammenfassung 相似文献
70.
On the one hand the following case demonstrates the problems of finding a dead body in the bathroom and on the other hand the importance of postmortem x-ray examinations. The corpse of an 65-year-old woman was discovered in her bath tub. At the body's feet there was a hair dryer. Investigations concerning murder were negative, circumstances appeared to be unsuspicious. That was why a postmortem examination was not performed. -4 years later murder had to be considered. After manual strangling the deceased and the hair dryer were layed into the bath tub. The corpse was exhumed and taken to a forensic autopsy. It was found that the hyoid bone and the superior horn of the thyroid cartilage were both fractured on the right. Damages caused by the preparation itself were excluded by using serial roentgenographs. These observations in combination with histological findings and the results of further investigations convincingly supported the suspicion of strangling by hand. 相似文献