全文获取类型
收费全文 | 72623篇 |
免费 | 3032篇 |
专业分类
各国政治 | 4597篇 |
工人农民 | 2992篇 |
世界政治 | 6376篇 |
外交国际关系 | 3952篇 |
法律 | 34700篇 |
中国共产党 | 11篇 |
中国政治 | 778篇 |
政治理论 | 21292篇 |
综合类 | 957篇 |
出版年
2021年 | 428篇 |
2020年 | 1180篇 |
2019年 | 1551篇 |
2018年 | 1741篇 |
2017年 | 2051篇 |
2016年 | 2233篇 |
2015年 | 1861篇 |
2014年 | 2149篇 |
2013年 | 10730篇 |
2012年 | 1744篇 |
2011年 | 1843篇 |
2010年 | 1900篇 |
2009年 | 2123篇 |
2008年 | 1880篇 |
2007年 | 1865篇 |
2006年 | 1980篇 |
2005年 | 1871篇 |
2004年 | 1784篇 |
2003年 | 1617篇 |
2002年 | 1618篇 |
2001年 | 1822篇 |
2000年 | 1583篇 |
1999年 | 1378篇 |
1998年 | 1174篇 |
1997年 | 1035篇 |
1996年 | 999篇 |
1995年 | 962篇 |
1994年 | 994篇 |
1993年 | 1003篇 |
1992年 | 1053篇 |
1991年 | 1083篇 |
1990年 | 1012篇 |
1989年 | 1084篇 |
1988年 | 1050篇 |
1987年 | 1069篇 |
1986年 | 1053篇 |
1985年 | 1103篇 |
1984年 | 984篇 |
1983年 | 1051篇 |
1982年 | 940篇 |
1981年 | 894篇 |
1980年 | 703篇 |
1979年 | 748篇 |
1978年 | 616篇 |
1977年 | 564篇 |
1976年 | 522篇 |
1975年 | 446篇 |
1974年 | 438篇 |
1973年 | 438篇 |
1972年 | 390篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
201.
202.
North American research on the policing of ‘domestic violence’ has been very influential among policy makers in Great Britain.
In particular, research which purports to verify the deterrence value of arrest has prompted the establishment of over thirty
domestic violence units in London and similar initiatives elsewhere in Britain. The paper will outline the nature of the traditional
police response to ‘family violence’ in London and the nature of the experimental innovations. Changes in police practice
with regard to this type of violence will be put in the context of the organizational constraints and possibilities of policing.
Finally, changing police responses to domestic violence will be evaluated in terms of the debate over the possibility of using
the state or its organs to achieve social change. 相似文献
203.
204.
Ross A. Thompson Mario J. Scalora Susan P. Limber Lynn Castrianno 《Family Court Review》1991,29(1):9-25
In recent years, legislators in all fifty states have given grandparents rights to petition for visitation privileges with grandchildren that can be enforced over parental objections. Grandparent visitation rights reflect an effort to protect meaningful relationships children enjoy with nonparental caregivers, enlist the assistance of extended family when the child's nuclear family is disrupted, and defend the interests of grandparents themselves. This psycholegal analysis explores the direct and indirect consequences of grandparent visitation statutes for family functioning. Statutory provisions are summarized, and the effects of these statutes are evaluated in light of what is known about the role of grandparents in child development, how courts evaluate children's "best interests" in grandparent visitation disputes, and how these statutes can alter family functioning in informal ways. The authors conclude that there are risks as well as benefits to children and families in grandparent visitation statutes, and suggest directions for procedural and statutory reform. 相似文献
205.
A. Bajt 《Economic Change and Restructuring》1991,24(1):1-12
Kornai's thesis that shortage results from demand expansions bred by the soft budget constraint, derives from his implicit assumption that price regimes of input and output firms are different. Since any firm is both an input and an output firm, which discards the assumption as logically untenable, excess demand can only turn up because of lower than contracted inputs of labor and management that are not offset by an adequate downward adjustment of earnings. Expansions of demand that appear to be autonomous, are incited by uncertain deliveries of inputs, that is, by inefficiency (of output firms) as well. A by far the largest part of excess demand can be explained by state preferences for fast growth. As planners are more successful in generating investment, and the ensuing consumer, demand than in expanding production, shortage is inevitable regardless of the character of the firms' budget constraints. 相似文献
206.
K. Minakata O. Suzuki Y. Ishikawa H. Seno M. Asano 《Forensic Science International Supplement Series》1991,50(2)
A simple and sensitive method is described for quantitative analysis of chlorpromazine in blood, serum, urine and tissue homogenate. The chlorpromazine cation radical produced by adding perchloric acid and 2,3-dichloro-5,6-dicyano-p-benzoquinone to the sample can be detected by the ESR method at room temperature. The sensitivity limit is 10 ng, that is, 20 μl of the solution containing 0.5 μg chlorpromazine/ml. The time needed for the measurement is within 10 min. The chlorpromazine radical thus produced is very stable; for example, 95% of the radical was observed after 24 h. The advantage of this method is discussed by comparing with the ordinary spectrophotometry which requires the purification of the sample. 相似文献
207.
208.
209.
210.
The remains of an unidentified female neonate were discovered in a field in central Missouri. Examination revealed bilateral absence of the parietal bones. A search of the literature describing similar defects suggests that the present case represents a unique condition, described here for the first time. 相似文献