全文获取类型
收费全文 | 15653篇 |
免费 | 412篇 |
专业分类
各国政治 | 627篇 |
工人农民 | 586篇 |
世界政治 | 1119篇 |
外交国际关系 | 489篇 |
法律 | 9829篇 |
中国政治 | 110篇 |
政治理论 | 3200篇 |
综合类 | 105篇 |
出版年
2020年 | 167篇 |
2019年 | 255篇 |
2018年 | 315篇 |
2017年 | 329篇 |
2016年 | 324篇 |
2015年 | 226篇 |
2014年 | 295篇 |
2013年 | 1498篇 |
2012年 | 345篇 |
2011年 | 401篇 |
2010年 | 323篇 |
2009年 | 387篇 |
2008年 | 416篇 |
2007年 | 411篇 |
2006年 | 386篇 |
2005年 | 355篇 |
2004年 | 375篇 |
2003年 | 350篇 |
2002年 | 320篇 |
2001年 | 671篇 |
2000年 | 586篇 |
1999年 | 449篇 |
1998年 | 227篇 |
1997年 | 191篇 |
1996年 | 182篇 |
1995年 | 181篇 |
1994年 | 179篇 |
1993年 | 169篇 |
1992年 | 325篇 |
1991年 | 364篇 |
1990年 | 350篇 |
1989年 | 361篇 |
1988年 | 327篇 |
1987年 | 328篇 |
1986年 | 348篇 |
1985年 | 338篇 |
1984年 | 314篇 |
1983年 | 291篇 |
1982年 | 204篇 |
1981年 | 194篇 |
1980年 | 142篇 |
1979年 | 219篇 |
1978年 | 124篇 |
1977年 | 133篇 |
1976年 | 114篇 |
1975年 | 105篇 |
1974年 | 133篇 |
1973年 | 136篇 |
1972年 | 114篇 |
1971年 | 102篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
R. Alan Thompson 《Journal of Police and Criminal Psychology》1997,12(1):61-69
On January 1, 1996, a new law took effect in Texas granting certain state citizens the privilege to carry a concealed handgun
on their person for the first time since 1871. As a result of this dramatic shift in state law, Texas is now among the growing
number of states across the nation who have adopted similar statutory provisions in one form or another. While at least one
empiricals study of citizen’s attitudes toward concealed handgun ownership was conducted prior to the law’s effective date,
no similar efforts were undertakens to assess the beliefs, perceptions and attitudes of the state’s law enforcement officers
about this important social policy. The present study was therefore undertaken in response to the lack of serious attention
which the issue of concealed handgun ownership among private citizens has received as it directly relates to the law enforcement
profession. Subjects for this study (N=327) were drawn from four Texas law enforcement agencies representing various organizational
sizes and missions. While the responses of officers who participated in the study indicate optimism about the law’s potential
to deter various types of crime, they also reflect a certain degree of concerns about concealed handgun ownership among private
citizens especially as this policy directly relates to perceive inadequacies in statemandated requirements and issues affecting
officer safety. 相似文献
93.
Cheldelin Sandra Greenberg Melanie Honeyman Christopher Volpe Maria R. 《Negotiation Journal》2003,19(1):65-67
Negotiation Journal - 相似文献
94.
A case of kidnapping involving the concept of paternity testing is described. The couple arrested and charged with kidnapping stated the child in their possession was their biological daughter. Serological tests were performed on liquid blood samples in an effort to determine if the couple could have been the biological parents of the child. Two genetic inconsistencies were discovered in the 15 blood marker systems analyzed. 相似文献
95.
96.
97.
V. K. Borooah 《Public Choice》1991,72(1):1-12
An important problem in the political economy of the UK is that the disparity of unemployment rates across its regions is much more marked than the corresponding dispersion of wage rates. One possibility is that this is due to the attitude of trade unions to their members in different regions. If unions wish to preserve parity between members in different regions then they will value wage equality between regions over and above wage levels. This may then persuade them to overlook inter-regional productivity differences in setting wages. The price that low-efficiency regions will then pay for this desire for wage equality is higher unemployment rates.Much of the research for this paper was carried out while the author was visiting the Trade Union Economics Research Institute (FIEF), Stockholm in 1989. An earlier version of this paper was presented at a seminar there and the author is gratefully to Villy Bergstrom, Paul Chen, Douglas Hibbs, Eva Udden-Jondal and other institute members for several useful comments. Comments from Kevin Lee, John Spencer and an anonymous referee have also substantially improved the paper. The usual disclaimer applies. 相似文献
98.
99.
A dissecting intramural haematoma of the coronary artery is an infrequent cause of sudden and unexpected death. Most cases are women and in a significant number of these women, the haematoma occurred at term to 80 days postpartum. Because the intimal rupture and communication with the lumen were not found in most of the cases, the site of rupture has been considered to be a vasa vasorum. The authors report on a case of one woman who was at a later postpartum period (106 days). The microscopic finding of the dissected coronary artery revealed two intimal tears in a section. The case showed that the dissecting intramural haematoma of the coronary artery is caused not only by the rupture of the vasa vasorum but also by the rupture of the intima. 相似文献
100.
Distinctive blunt force injuries caused by a crescent wrench. 总被引:1,自引:0,他引:1