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   8313篇
  免费   106篇
  国内免费   3篇
教育   5741篇
科学研究   988篇
各国文化   90篇
体育   577篇
综合类   3篇
文化理论   74篇
信息传播   949篇
  2021年   71篇
  2020年   96篇
  2019年   155篇
  2018年   207篇
  2017年   180篇
  2016年   177篇
  2015年   119篇
  2014年   158篇
  2013年   1589篇
  2012年   166篇
  2011年   168篇
  2010年   146篇
  2009年   129篇
  2008年   152篇
  2007年   130篇
  2006年   136篇
  2005年   123篇
  2004年   138篇
  2003年   109篇
  2002年   109篇
  2001年   128篇
  2000年   138篇
  1999年   108篇
  1998年   78篇
  1997年   79篇
  1996年   88篇
  1995年   71篇
  1994年   67篇
  1993年   105篇
  1992年   121篇
  1991年   129篇
  1990年   122篇
  1989年   107篇
  1988年   99篇
  1987年   111篇
  1986年   108篇
  1985年   112篇
  1984年   92篇
  1983年   106篇
  1982年   105篇
  1981年   87篇
  1980年   84篇
  1979年   111篇
  1978年   97篇
  1977年   88篇
  1976年   84篇
  1974年   72篇
  1973年   73篇
  1972年   59篇
  1971年   66篇
排序方式: 共有8422条查询结果,搜索用时 46 毫秒
11.
12.
13.
14.
15.
16.
The National Library of Medicine has had an enormous impact on health information services all over the world. Although NLM is primarily a national institution, it has become an important international resource by responding to requests from the international community. NLM has been influential in three major ways. First, NLM has provided a model for other national and regional health information services. Second, it has been a catalyst, in that MEDLARS and other services it provides formed the nucleus of many regional networks. NLM helped such networks get started by giving advice on how to set up services and build collections and by "training the trainers" on the MEDLARS system. Third, NLM has supported national and regional operations by providing the additional training and materials needed for day-to-day service.  相似文献   
17.
18.
A user study of the Index Medicus done at the Walter Reed Army Medical Center included responses from a group of sixty researchers, clinicians, residents, and interns. An analysis of the questionnaire shows that, while all respondents use the Index Medicus, most use it to search for a specific subject or a specific author reference. Comments received were critical of the delay from the time of journal publication until the appearance of its citation in Index Medicus. Suggestions were offered concerning the type of publication most of the respondents would prefer.  相似文献   
19.
Since a sizeable hospital must have a library, it must have a library committee. Like all hospital committees, this one is to help maintain standards of medical care and to mediate between staff and administration. Unlike others, it clusters around one elected member (the chairman) and one employee (the librarian). A dynamic librarian can, and should, influence and inspire the committee's deliberations; and must be able to depend upon the support of the physician members of the committee.  相似文献   
20.
Cancelled charge slips collected over a one-year period supply the data for this analysis of circulation in the Yale Medical Library. Full-time teaching faculty are the heaviest users of journal literature, and students, of monograph literature. Faculties of Medical School departments are compared in terms of their use of material in individual subjects. Subject literatures are analyzed in terms of groups of users borrowing from them. The extent to which journal titles used by medical students are also used by Medical School faculty is examined. One of the products of the study is a rank list of journal titles used in the Library. Results are presented in several tables.  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