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   16556篇
  免费   230篇
  国内免费   13篇
教育   11484篇
科学研究   1956篇
各国文化   146篇
体育   1228篇
综合类   23篇
文化理论   181篇
信息传播   1781篇
  2022年   121篇
  2021年   163篇
  2020年   244篇
  2019年   343篇
  2018年   488篇
  2017年   545篇
  2016年   497篇
  2015年   332篇
  2014年   458篇
  2013年   2797篇
  2012年   408篇
  2011年   398篇
  2010年   363篇
  2009年   320篇
  2008年   349篇
  2007年   350篇
  2006年   326篇
  2005年   272篇
  2004年   310篇
  2003年   268篇
  2002年   278篇
  2001年   345篇
  2000年   386篇
  1999年   304篇
  1998年   168篇
  1997年   212篇
  1996年   208篇
  1995年   137篇
  1994年   150篇
  1993年   143篇
  1992年   235篇
  1991年   233篇
  1990年   264篇
  1989年   259篇
  1988年   220篇
  1987年   233篇
  1986年   211篇
  1985年   246篇
  1984年   186篇
  1983年   166篇
  1982年   159篇
  1981年   136篇
  1980年   142篇
  1979年   212篇
  1978年   165篇
  1977年   143篇
  1976年   115篇
  1975年   111篇
  1974年   116篇
  1971年   111篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
How will the expansion of the concept of construct validity affect validation practice in employment testing? How does the need for consequential validity differ in educational and employment testing? How do the research bases differ for performance assessment in these settings? Are there parallel trends in policies for test use in education and industry?  相似文献   
22.
23.
24.
25.
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   
26.
Policies for responding to allegations of fraud in research   总被引:1,自引:0,他引:1  
Greene PJ  Durch JS  Horwitz W  Hooper VS 《Minerva》1985,23(2):203-215
  相似文献   
27.
28.
29.
An attempt has been made in this bibliography to represent the various viewpoints concerning education for medical librarianship equally. The topics covered include: general background reading and readings for those interested in establishing courses in medical librarianship. The former includes annotations on the history and international aspects of the subject. The latter consists of annotations of articles on early courses and present courses in medical librarianship. A final area discussed is the Medical Library Association's Code for the Training and Certification of Medical Librarians.  相似文献   
30.
Adequate research in the peripheral field of medical geography requires familiarity with the literature of medicine, geography, and other environmentally oriented fields. The pertinent literature of the two primary disciplines, as well as that of anthropology, nutrition, and human bioclimatology, is surveyed from a bibliographical point of view. A brief review of historical sources is presented, followed by a discussion of the contemporary organizations, both international and national, active in the field. Emphasis is placed on the publishing programs and projects, maps, atlases, symposia, reports, and other literature sponsored or stimulated by these organizations. Regional bibliographical surveys for East Africa, India, and the Soviet Union are also noted. Pertinent aspects of bibliographies, indexes, abstracts, library card catalogs and accession lists, and other resources are listed, with emphasis on the various subject headings and other approaches to them. Throughout, the sources of information are approached from a multidisciplinary and interdisciplinary viewpoint.  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