首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   80117篇
  免费   3065篇
各国政治   4634篇
工人农民   3174篇
世界政治   6685篇
外交国际关系   3998篇
法律   41255篇
中国共产党   14篇
中国政治   788篇
政治理论   21673篇
综合类   961篇
  2021年   447篇
  2020年   1210篇
  2019年   1567篇
  2018年   1871篇
  2017年   2171篇
  2016年   2349篇
  2015年   1896篇
  2014年   2145篇
  2013年   10782篇
  2012年   1927篇
  2011年   2125篇
  2010年   2019篇
  2009年   2220篇
  2008年   2127篇
  2007年   2096篇
  2006年   2239篇
  2005年   2132篇
  2004年   2017篇
  2003年   1787篇
  2002年   1857篇
  2001年   2274篇
  2000年   2017篇
  1999年   1715篇
  1998年   1284篇
  1997年   1093篇
  1996年   1079篇
  1995年   1034篇
  1994年   1066篇
  1993年   1075篇
  1992年   1280篇
  1991年   1316篇
  1990年   1253篇
  1989年   1302篇
  1988年   1253篇
  1987年   1270篇
  1986年   1291篇
  1985年   1305篇
  1984年   1149篇
  1983年   1174篇
  1982年   980篇
  1981年   924篇
  1980年   746篇
  1979年   883篇
  1978年   682篇
  1977年   607篇
  1976年   546篇
  1975年   495篇
  1974年   521篇
  1973年   520篇
  1972年   441篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
951.
Book reviews     
William C. Green and Theodore Karasik (Eds.), Gorbachev and his Generals: The Reform of Soviet Military Doctrine (Westview Press, 1990, 239pp. ISBN 0–8133–7898–2)

Daniel Patrick Moynihan, On the Law of Nations (Harvard University Press, 1990)

Peter J. Stavrakis, Moscow and Greek Communism, 1944–1949. Cornell University Press, Ithaca and London. 1989. ISBN 0–8014–2125–X.

Scalpino, R.A., The Politics of Development: Perspectives on Twentieth‐Century Asia (Harvard University Press, Cambridge, Mass., 1989, pp.131)

Sean M. Lynn‐Jones, Steven E. Miller and Stephen van Evera (Eds.), Soviet Military Policy (MIT Press, 1989. £26.95 [cloth]; £13.50 [paperback]).  相似文献   

952.
953.
This study investigated the impact of the abolition of the tender years doctrine on custody decisions in divorce cases. This doctrine supported the presumption that the mother is the more suitable parent for young children. In March of 1981, the Supreme Court of the State of Alabama found this doctrine to be unconstitutional. To assess the hypothesis that this ruling had a significant effect on custodyrelated decisions, a sample of court records for divorce cases in an Alabama county was examined as representative of the state on a number of key variables. Overall, no significant differences were found on indicator variables for the comparisons before and after the ruling. There was neither an increase in custody grants to fathers nor an increase in custody requests by fathers.  相似文献   
954.
955.
956.
957.
People die daily in the hospital. Mostly, they die because their illnesses were no longer treatable (natural death). Unfortunately, some people die an unnatural death, in particular, as the result of euthanasia. In contrast to the situation in most countries, in the Netherlands euthanasia is accepted by the courts under strict conditions. It can be very difficult for the legal authorities to establish whether a person has died from natural causes or from suicide, euthanasia, or murder. In addition to the pathologist and the lawyer, the toxicologist also has a number of problems in showing whether euthanasia has been carried out. These can consist of the following analytical problems: (a) interactions--the patients involved have frequently been receiving a large number of toxic and nontoxic drugs simultaneously; (b) identification--not all drugs administered are included in general screening procedures; (c) metabolites--a large number of metabolites may have accumulated toward the end of a long therapeutic regimen; and (d) determination--determination of quaternary muscle relaxants and their various metabolites, as well as other drugs, can be problematic. There are also toxicokinetic problems; because of poor kidney and liver function, low serum albumen, general malaise, and interactions between these factors and other drugs, the kinetics of a given drug can differ from normal. This makes it all the more difficult to determine whether the patient died from an accumulation of medication or from a so-called "euthanetic" drug mixture.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   
958.
In the summer of 1984, police in Pinellas County, Florida, confiscated six identically colored imported Asian skulls (in a shipping case) from a private citizen. In May 1988, in nearby Hillsborough County, police confiscated a very similar skull from another private citizen, who allegedly had found it in an abandoned house. Aside from slight color differences between the six found in Pinellas County and the one found in Hillsborough County, the skulls are virtually identical in their osteological characteristics and condition and in the vital statistics derived from each. Each skull is as clean and dry as those typically sold by commercial scientific supply outlets in the United States. Each is edentulous (primarily premortem), between approximately 20 and 60 years of age at death, and morphologically Asian. Five of the seven are morphologically male, one is morphologically female, and one is a mosaic with respect to gender-related features. Police, medical examiners, coroners, and forensic anthropologists should be aware of such "souvenir" specimens, in the event that they encounter similar skulls. Discriminant function analyses for race and sex yield considerably conflicting results, which underscores the need for using extreme caution when interpreting forensic science estimates based on such techniques.  相似文献   
959.
960.
The authors developed a method of malathion insecticide determination in the cadaveric material (blood and wall of the stomach) including extraction of 5 ml of blood (5 g of fragmented tissue of stomach wall) by hexan; preparative chromatographic purification of extract on silicagel layer L 5/40 mkm in hexan-diethyl ether system 10:2; Gas-liquid chromatographic investigation on column with 5% SE-30 and 5% XE-60 (Chromatograph "Colour-106" with thermionic detector). This method makes it possible to detect 72-76% of malathion added.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号