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   26488篇
  免费   456篇
  国内免费   19篇
教育   19032篇
科学研究   2274篇
各国文化   284篇
体育   2188篇
综合类   14篇
文化理论   211篇
信息传播   2960篇
  2022年   186篇
  2021年   294篇
  2020年   441篇
  2019年   701篇
  2018年   952篇
  2017年   939篇
  2016年   823篇
  2015年   507篇
  2014年   776篇
  2013年   5268篇
  2012年   742篇
  2011年   736篇
  2010年   549篇
  2009年   575篇
  2008年   648篇
  2007年   581篇
  2006年   519篇
  2005年   497篇
  2004年   451篇
  2003年   424篇
  2002年   412篇
  2001年   522篇
  2000年   451篇
  1999年   421篇
  1998年   245篇
  1997年   251篇
  1996年   295篇
  1995年   277篇
  1994年   231篇
  1993年   232篇
  1992年   370篇
  1991年   334篇
  1990年   340篇
  1989年   334篇
  1988年   283篇
  1987年   323篇
  1986年   288篇
  1985年   326篇
  1984年   267篇
  1983年   226篇
  1982年   212篇
  1981年   192篇
  1980年   177篇
  1979年   276篇
  1978年   203篇
  1977年   179篇
  1976年   171篇
  1975年   154篇
  1974年   163篇
  1971年   150篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
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   
82.
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   
83.
Book reviews     
Zwartjes, Otto, ed. La Sociedad andalusí y sus tradiciones literarias (Foro Hispánico, 7). Amsterdam: Rodopi, 1994.

Brincat, Joseph M. Malta 870–1054: Al‐Himyai's Account and its Linguistic Implications. Malta: Said International Ltd., 1995. 52pp.

Sells, Michael A. Mystical Languages of Unsaying. Chicago: The University of Chicago Press, 1994. 316 pp., US$18.95 (paperback), US$49.91 (cloth).

Diem, Werner, Arabische Geschäftsbriefe des 10. bis 14. Jahrhunderts aus der Österreichischen Nationalbibliothek in Wien (Documents Arabica Antiqua 1), 2 vols. Wiesbaden: Harrassowitz, 1995. Textband ix+518pp., Tafelband 76 plates.

Coope, Jessica A. The Martyrs of Cordoba: Community and Family Conflict in an Age of Mass Conversion. Lincoln: University of Nebraska Press, 1995. xvii+113 pp., US$ 25 (cloth).

Edwards, John. Religion and Society in Spain, c.1492 (Variorum Collected Studies Series: CS 520). Aldershot and Brookfield: Variorum, 1996. x+351 pp., US$ 97.00 (cloth).

Tolan, John Victor, ed. Medìeval Christian Perceptions of Islam. A Book of Essays (Garland Medieval Casebooks, Volume 10). New York and London: Garland Publishing, 1996. xxi+414 pp., US$60.00 (cloth).  相似文献   

84.
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   
85.
86.
87.
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   
88.
89.
Burgen M 《Ebony》1978,33(6):127-30, 132, 134 passim
  相似文献   
90.
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   
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