全文获取类型
收费全文 | 17639篇 |
免费 | 308篇 |
专业分类
各国政治 | 701篇 |
工人农民 | 1526篇 |
世界政治 | 754篇 |
外交国际关系 | 591篇 |
法律 | 10495篇 |
中国共产党 | 3篇 |
中国政治 | 69篇 |
政治理论 | 3729篇 |
综合类 | 79篇 |
出版年
2021年 | 55篇 |
2020年 | 133篇 |
2019年 | 188篇 |
2018年 | 1478篇 |
2017年 | 1437篇 |
2016年 | 1254篇 |
2015年 | 245篇 |
2014年 | 207篇 |
2013年 | 1117篇 |
2012年 | 455篇 |
2011年 | 1152篇 |
2010年 | 1184篇 |
2009年 | 800篇 |
2008年 | 1005篇 |
2007年 | 944篇 |
2006年 | 302篇 |
2005年 | 313篇 |
2004年 | 411篇 |
2003年 | 357篇 |
2002年 | 250篇 |
2001年 | 274篇 |
2000年 | 275篇 |
1999年 | 202篇 |
1998年 | 133篇 |
1997年 | 137篇 |
1996年 | 133篇 |
1995年 | 134篇 |
1994年 | 120篇 |
1993年 | 119篇 |
1992年 | 188篇 |
1991年 | 202篇 |
1990年 | 181篇 |
1989年 | 183篇 |
1988年 | 164篇 |
1987年 | 183篇 |
1986年 | 179篇 |
1985年 | 169篇 |
1984年 | 170篇 |
1983年 | 178篇 |
1982年 | 104篇 |
1981年 | 91篇 |
1980年 | 78篇 |
1979年 | 112篇 |
1978年 | 84篇 |
1977年 | 82篇 |
1976年 | 60篇 |
1975年 | 59篇 |
1974年 | 65篇 |
1973年 | 73篇 |
1972年 | 63篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
In this study, a new method was developed for the impurity profiling of illicit MDMA tablets. The extraction efficiency, linearity, repeatability and reproducibility of the method were evaluated. Eighty two MDMA tablets coming from presumed unrelated large seizures in 2004 (n >500 tablets) were analyzed by gas chromatography mass spectrometry (GC-MS) in order to assess the discrimination power of the method. The latter was found to be practical, robust, relatively easy to perform, highly discriminative and yielding good chromatography. In addition, some new impurities were detected and identified. Their chemical structures and mass spectra are reported. 相似文献
102.
Allan E. Barsky 《Family Court Review》2007,45(4):560-572
Child custody evaluators with experience in mediation may be tempted to use mediation skills and strategies in their evaluation processes. This article explores the benefits and risks of blending mediation with evaluation, comparing the perspectives of professionals and clients. 相似文献
103.
Stephen Kershnar 《Law and Philosophy》2007,26(5):437-463
In two recent cases, Grutter v. Bollinger, 539 U.S. 306. (2003) and Gratz v. Bollinger, 539 U.S. 244. (2003), the Supreme
Court held that the Equal Protection Clause permitted state schools to use race-sensitive admissions in order to obtain the
educational benefits that flow from a diverse student body. The diversity-based argument for race-sensitive admissions, scholarships,
awards, and other opportunities at universities should have been rejected because it does not consider the full range of costs
and benefits and because the more narrow educational effects probably weigh against such programs. However, this does not
suggest that applicants’ race, ethnicity, and gender should be ignored. Rather the same consideration that led to the defeat
of the diversity argument, i.e., reasoning capacity, supports the consideration of demographic factors. However, attention
to such factors further undermines the consequentialist case for affirmative action. 相似文献
104.
105.
California is now in its 11th year of mandatory child custody mediation, with a current yearly case volume statewide estimated at 65,494. This article profiles the variations in programs and mediation styles in 56 of the state's 58 Superior Courts. Two research studies provide the basis for the information on program structures, case activity, procedures, agreement formats, recommendations, facilities, security, and fees. 相似文献
106.
Wolfgang Durner 《Natur und Recht》2010,32(12):900-900
107.
108.
109.
This paper aims to review randomized experiments in criminology with offending outcomes and reasonably large numbers that were published between 1982 and 2004. A total of 83 experiments are summarized, compared with only 35 published between 1957 and 1981: 12 on policing, 13 on prevention, 14 on corrections, 22 on courts, and 22 on community interventions. Randomized experiments are still relatively uncommon, but there have been more large-scale multi-site experiments and replication programs. There have also been several experiments in which 100 or more places were randomly assigned. Relatively few experiments (only 10 out of 83) were conducted outside the United States. Meta-analyses suggest that prevention methods, correctional therapy, batterer programs, drug courts, juvenile restitution and deterrent policing were effective in reducing offending, while Scared Straight and boot camp programs caused a significant increase in offending. 相似文献
110.