全文获取类型
收费全文 | 3429篇 |
免费 | 56篇 |
专业分类
各国政治 | 97篇 |
工人农民 | 93篇 |
世界政治 | 145篇 |
外交国际关系 | 95篇 |
法律 | 2650篇 |
中国政治 | 17篇 |
政治理论 | 351篇 |
综合类 | 37篇 |
出版年
2020年 | 33篇 |
2019年 | 34篇 |
2018年 | 54篇 |
2017年 | 42篇 |
2016年 | 63篇 |
2015年 | 28篇 |
2014年 | 51篇 |
2013年 | 245篇 |
2012年 | 86篇 |
2011年 | 132篇 |
2010年 | 79篇 |
2009年 | 61篇 |
2008年 | 108篇 |
2007年 | 121篇 |
2006年 | 106篇 |
2005年 | 84篇 |
2004年 | 121篇 |
2003年 | 113篇 |
2002年 | 109篇 |
2001年 | 150篇 |
2000年 | 134篇 |
1999年 | 103篇 |
1998年 | 20篇 |
1995年 | 17篇 |
1993年 | 27篇 |
1992年 | 62篇 |
1991年 | 83篇 |
1990年 | 85篇 |
1989年 | 91篇 |
1988年 | 95篇 |
1987年 | 89篇 |
1986年 | 75篇 |
1985年 | 77篇 |
1984年 | 67篇 |
1983年 | 58篇 |
1982年 | 24篇 |
1981年 | 20篇 |
1979年 | 30篇 |
1978年 | 33篇 |
1977年 | 22篇 |
1976年 | 27篇 |
1975年 | 28篇 |
1974年 | 37篇 |
1973年 | 37篇 |
1972年 | 35篇 |
1971年 | 36篇 |
1970年 | 38篇 |
1969年 | 32篇 |
1968年 | 27篇 |
1967年 | 18篇 |
排序方式: 共有3485条查询结果,搜索用时 31 毫秒
11.
William V. Pelfrey Jr. 《Journal of criminal justice》2007,35(3):313
Although law enforcement agencies across the nation have assumed part of the responsibility in the fight against terrorism, significant confusion exists as to the role of local law enforcement. While some agencies have taken steps towards terrorism prevention, little data has been collected on which agencies have taken the greatest steps, how those agencies have changed, and how other agencies should direct their activity. This case study of law enforcement census data from a single state considered variations in terrorism preparedness and predictors of preparedness. Agency size, presence of funding, and other variables significantly predict levels of terrorism preparedness. Important policy implications such as the distribution of funding and which agencies should be working towards terrorism preparedness are discussed. 相似文献
12.
13.
14.
Public Choice - We consider an economy where the rent value depends indirectly on value-adding investment of agents (thus indirectly endogenous) and the win-probability is a function of rent... 相似文献
15.
16.
17.
A simple and rapid method is described for processing organ and water samples for the identification of diatoms so that they can be studied and recorded for taxonomic and diagnostic purposes. Samples are treated with concentrated nitric acid; the fluid obtained is centrifuged, and its sediment is dried, coated, and examined under the scanning electron microscope. The method does not alter the morphology of diatoms and allows the study of freshwater and seawater species present in the organs of bodies found in the water, making possible the diagnosis of drowning under specific conditions. 相似文献
18.
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
19.
Kathleen V. Cairns 《Critical Criminology》1993,4(2):73-84
Research data from a recent study of sexual harassment in single student residences are provided as confirmation of DeKeseredy
and Kelly's national study. The implications of data confirming the consistency of gender differences in attitudes towards
and perceptions of unwanted sexual experiences are discussed. Future research in sexual harassment should focus on evaluating
preventive education programmes and on operationalizing contextual factors that support sexual harassment. 相似文献
20.