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   23308篇
  免费   418篇
  国内免费   16篇
教育   16703篇
科学研究   2039篇
各国文化   230篇
体育   1936篇
综合类   15篇
文化理论   179篇
信息传播   2640篇
  2022年   175篇
  2021年   271篇
  2020年   406篇
  2019年   632篇
  2018年   873篇
  2017年   837篇
  2016年   739篇
  2015年   448篇
  2014年   693篇
  2013年   4575篇
  2012年   669篇
  2011年   665篇
  2010年   494篇
  2009年   509篇
  2008年   566篇
  2007年   508篇
  2006年   442篇
  2005年   418篇
  2004年   378篇
  2003年   375篇
  2002年   351篇
  2001年   493篇
  2000年   405篇
  1999年   369篇
  1998年   214篇
  1997年   216篇
  1996年   242篇
  1995年   244篇
  1994年   184篇
  1993年   209篇
  1992年   330篇
  1991年   301篇
  1990年   299篇
  1989年   301篇
  1988年   256篇
  1987年   305篇
  1986年   260篇
  1985年   293篇
  1984年   238篇
  1983年   200篇
  1982年   173篇
  1981年   161篇
  1980年   137篇
  1979年   246篇
  1978年   175篇
  1977年   154篇
  1976年   141篇
  1975年   131篇
  1974年   134篇
  1971年   120篇
排序方式: 共有10000条查询结果,搜索用时 406 毫秒
71.
The use of rural sites to train badly needed primary care providers requires access to sophisticated medical information not traditionally available outside of academic health centers. Medical reference librarians can play a key role in the development of primary care training sites in rural settings. Electronic information technologies, with proactive support from medical reference librarians, can provide current and detailed information without concern for distance from the health science center library. This paper discusses recent developments in technology, describes current challenges to the application of this technology in rural settings, and provides policy recommendations for medical reference librarians to enhance rural primary care training.  相似文献   
72.
In 1991, the Reference and Information Services staff of the Alfred Taubman Medical Library at the University of Michigan gathered data on the use of the reference desk, including the frequency and types of assistance requested by different user groups throughout the year. Recommendations based on the results of this study led to improved service as well as more efficient use of staff resources.  相似文献   
73.
The purpose of the study was to identify the pattern of publication about women and AIDS in scientific journals. Bradford zones were identified in each of six databases. The study determined that journal scatter for this subset of AIDS literature differed from the scatter in the general literature; further, the information indexed in the six electronic sources demonstrated little overlap. Consequently, key journal and newsletter titles identified by this study should form the core of any collection focusing on women and AIDS. The assurance of quality patient care management demands that librarians consult multiple resources for information retrieval that can assist health care providers, patients, and caregivers to enhance quality of life as well as to provide optimum care.  相似文献   
74.
75.
76.
Among the huge maze of resources available on the Internet, UnCoverWeb stands out as a valuable tool for medical libraries. This up-to-date, free-access, multidisciplinary database of periodical references is searched through an easy-to-learn graphical user interface that is a welcome improvement over the telnet version. This article reviews the basic and advanced search techniques for UnCoverWeb, as well as providing information on the document delivery functions and table of contents alerting service called Reveal. UnCover's currency is evaluated and compared with other current awareness resources. System deficiencies are discussed, with the conclusion that although UnCoverWeb lacks the sophisticated features of many commercial database search services, it is nonetheless a useful addition to the repertoire of information sources available in a library.  相似文献   
77.
78.
Burgen M 《Ebony》1978,33(6):127-30, 132, 134 passim
  相似文献   
79.
Hospital physicians naturally require current medical information in order to treat their patients. An objectively obtained SDILINE storesearch was devised to obtain this information. A rank-ordered list of hospital discharge diagnoses, coded with ICDA terms, was translated into MeSH. The top two Bradford zones of journals defined as useful at the University of Missouri--Kansas City were ANDed to these MeSH terms. Citations retrieved from the storesearch are input into an in-house computerized data base. The method can be easily used by other medical or hospital libraries without access to computers.  相似文献   
80.
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