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   11329篇
  免费   581篇
各国政治   476篇
工人农民   374篇
世界政治   885篇
外交国际关系   379篇
法律   7440篇
中国共产党   1篇
中国政治   60篇
政治理论   2245篇
综合类   50篇
  2021年   63篇
  2020年   205篇
  2019年   247篇
  2018年   250篇
  2017年   320篇
  2016年   317篇
  2015年   257篇
  2014年   283篇
  2013年   1132篇
  2012年   249篇
  2011年   324篇
  2010年   309篇
  2009年   327篇
  2008年   311篇
  2007年   284篇
  2006年   304篇
  2005年   279篇
  2004年   275篇
  2003年   258篇
  2002年   261篇
  2001年   483篇
  2000年   432篇
  1999年   310篇
  1998年   203篇
  1997年   159篇
  1996年   138篇
  1995年   128篇
  1994年   159篇
  1993年   143篇
  1992年   219篇
  1991年   231篇
  1990年   212篇
  1989年   220篇
  1988年   220篇
  1987年   203篇
  1986年   253篇
  1985年   220篇
  1984年   167篇
  1983年   176篇
  1982年   125篇
  1981年   126篇
  1980年   91篇
  1979年   142篇
  1978年   80篇
  1977年   82篇
  1976年   73篇
  1974年   78篇
  1973年   69篇
  1972年   66篇
  1970年   47篇
排序方式: 共有10000条查询结果,搜索用时 11 毫秒
921.
This paper takes a comparative case–study approach, located within the literature on policy networks, to organic agriculture policy in the United Kingdom and Ireland since the late 1980s. An examination of policy development for the organic sector focuses primarily on regulatory arrangements. The core of the analysis applies some prominent themes in the policy network literature to the organic sector: the debate about sectoral and sub–sectoral networks, the relationship between networks, context and outcomes, and the role of the state and ideas in promoting policy change.  相似文献   
922.
923.
Two cases of fatal overdose with morphine are presented. Large amounts of the drug were involved in both cases, one by oral ingestion, the other by intravenous injection. Morphine concentrations in various body fluids and tissues are compared to those in the literature.  相似文献   
924.
925.
926.
Contrary to the image of college campuses as “ivory towers,” the victimization of college students recently has been portrayed as a serious problem deserving policy intervention. Based on interviews designed after the National Crime Victimization Survey, which were conducted with 3,472 randomly selected students across 12 institutions, we examined both the level and sources of students'victimization. More than one-third of the sample reported being victims during the 1993–94 academic year. Informed by the lifestyle-routine activities approach, the analysis revealed that the risk of property victimization was increased by proximity to crime, target attractiveness, exposure, and lack of guardianship. The main predictor of violent victimization was a lifestyle that included high levels of partying on campus at night and the recreational use of drugs.  相似文献   
927.
928.
929.
The number of deaths as a consequence of orphenadine poisoning seems to increase, mostly among severely psychotic males. The lethal dose corresponds to the weekly average dose used in the treatment of neuroleptic extrapyramidal side effects. Based on the literature, the serious, rapidly incipient, cardiac, and neurologic symptoms of poisoning are emphasized. The handing out of orphenadine to suicidal persons must be restricted, and even small overdoses (1-2 g) ought to result in the immediate initiation of observation at an intensive care unit.  相似文献   
930.
The sciatic notch/acetabular index and its rule of thumb application was tested on two European skeletal series of documented sex. The results showed poor consistency between documented and estimated sex. Of the two variables comprising the index, it appeared that sciatic notch width was a particularly poor discriminator of sex. It is suggested that this may be due to differences in the relationship between sciatic notch form and body size in different ethnic groups.  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