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   8142篇
  免费   180篇
各国政治   484篇
工人农民   347篇
世界政治   521篇
外交国际关系   357篇
法律   4818篇
中国政治   54篇
政治理论   1681篇
综合类   60篇
  2020年   87篇
  2019年   109篇
  2018年   152篇
  2017年   168篇
  2016年   168篇
  2015年   126篇
  2014年   164篇
  2013年   902篇
  2012年   174篇
  2011年   175篇
  2010年   170篇
  2009年   175篇
  2008年   206篇
  2007年   227篇
  2006年   216篇
  2005年   168篇
  2004年   165篇
  2003年   183篇
  2002年   163篇
  2001年   293篇
  2000年   262篇
  1999年   245篇
  1998年   110篇
  1997年   99篇
  1996年   85篇
  1995年   79篇
  1994年   88篇
  1993年   80篇
  1992年   135篇
  1991年   170篇
  1990年   171篇
  1989年   151篇
  1988年   164篇
  1987年   185篇
  1986年   175篇
  1985年   159篇
  1984年   141篇
  1983年   130篇
  1982年   94篇
  1981年   101篇
  1980年   78篇
  1979年   138篇
  1978年   97篇
  1977年   80篇
  1976年   61篇
  1975年   90篇
  1974年   93篇
  1973年   88篇
  1972年   57篇
  1971年   61篇
排序方式: 共有8322条查询结果,搜索用时 7 毫秒
991.
Microbiologic analysis of different soil samples was undertaken to assess the value of this method for forensic purposes. Three groups of micro-organisms were isolated on selective media: bacteria, fungi, and actinomycetes. Comparison of the morphology of the colonies led to the conclusion of non identity of the soil samples under examination. The method was applied to soil traces on articles of clothing, trousers, shoes, and stockings. It was found that the soil did not originate from the suspected scene of a crime. Examination of the microbiologic soil composition does not provide an absolute certainty of identity, but it is highly reliable.  相似文献   
992.
Reformed batterers were interviewed about their perceptions on the nature of their abuse and how they stopped their abuse. The interviewees were 12 men from a men's counseling program who were nonviolent for 10 months or more. The men explained their abuse as a reaction to their failed macho complex. They viewed the counseling program as a reinforcement for their self-determination to change. And they described the process of change in terms of personal growth, in which they accepted responsibility, became empathetic, and redefined their manhood. The implications of the reformed batterer's perceptions for program development are discussed in the conclusion.  相似文献   
993.
State and federal funds are important sources of revenue for medical schools, and a strong case can be made for public support for these institutions. Although the federal role is more widely known, the states in fact provide the bulk of direct support for medical training. The nature of aid from the two sources differs in significant ways. Most federal aid supports research or patient care, but much of state aid goes to support unconditional tuition subsidies. The primary beneficiaries of these subsidies are relatively affluent nonminority students who are beginning lucrative careers in the medical field--careers that would be lucrative even if no subsidies were provided. Nor does it appear that general subsidies are needed to attract poor and minority applicants. While targeted loans and scholarships to individuals may be justified, general tuition subsidies are not.  相似文献   
994.
995.
Sudden and unexpected death and violent death of persons with a high risk of acquiring HIV-infections, especially homosexual males and intravenous drug abusers, have to be investigated by forensic autopsies. Therefore every forensic pathologist has to be aware of this infection and should try to make the proper diagnosis. Three typical cases are described: (1) suicide by hanging, (2) homicide by cutting the throat and (3) intravenous heroin overdose. Merely retrospectively it could be cleared up that the deceased were homosexual but did not manifestly suffer from AIDS. The morphological findings in the lymph nodes and the postmortem serological findings are described in detail.  相似文献   
996.
997.
998.
999.
1000.
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