全文获取类型
收费全文 | 32059篇 |
免费 | 411篇 |
国内免费 | 41篇 |
专业分类
教育 | 22226篇 |
科学研究 | 3873篇 |
各国文化 | 277篇 |
体育 | 2350篇 |
综合类 | 38篇 |
文化理论 | 246篇 |
信息传播 | 3501篇 |
出版年
2021年 | 304篇 |
2020年 | 477篇 |
2019年 | 670篇 |
2018年 | 917篇 |
2017年 | 975篇 |
2016年 | 878篇 |
2015年 | 549篇 |
2014年 | 741篇 |
2013年 | 5941篇 |
2012年 | 751篇 |
2011年 | 792篇 |
2010年 | 631篇 |
2009年 | 596篇 |
2008年 | 657篇 |
2007年 | 656篇 |
2006年 | 559篇 |
2005年 | 510篇 |
2004年 | 474篇 |
2003年 | 439篇 |
2002年 | 486篇 |
2001年 | 559篇 |
2000年 | 540篇 |
1999年 | 520篇 |
1998年 | 278篇 |
1997年 | 301篇 |
1996年 | 349篇 |
1995年 | 276篇 |
1994年 | 293篇 |
1993年 | 277篇 |
1992年 | 416篇 |
1991年 | 423篇 |
1990年 | 451篇 |
1989年 | 455篇 |
1988年 | 396篇 |
1987年 | 348篇 |
1986年 | 387篇 |
1985年 | 447篇 |
1984年 | 377篇 |
1983年 | 359篇 |
1982年 | 298篇 |
1981年 | 285篇 |
1980年 | 275篇 |
1979年 | 367篇 |
1978年 | 324篇 |
1977年 | 283篇 |
1976年 | 248篇 |
1975年 | 194篇 |
1974年 | 217篇 |
1973年 | 228篇 |
1971年 | 203篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Elliott CA 《美国档案工作者》1994,57(3):448-460
This paper explores surviving documentation and what it reveals about the underlying social structure and relations in a historic time and place. The mid-nineteenth century is chosen as a period prior to modern bureaucracies so that documents are not found in defining filing systems. Some six hundred documents are studied individually and characterized collectively. They are examined not to tell a story, however, but for evidence of their creation and maintenance and of their physical types, functional characteristics, and relations between authors and recipients. The study reveals the fruitfulness of such an orientation to documents, which complements traditional historical uses that emphasize document content. 相似文献
62.
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
63.
McCarthy LH 《Medical reference services quarterly》1996,15(4):63-71
64.
Lingle VA 《Medical reference services quarterly》1996,15(1):41-55
Benchmarking is a quality improvement tool that is increasingly being applied to the health care field and to the libraries within that field. Using mostly resources assessible at no charge through the Internet, a collection of information was compiled on benchmarking and its applications. Sources could be identified in several formats including books, journals and articles, multi-media materials, and organizations. 相似文献
65.
Lambremont JA 《Medical reference services quarterly》1997,16(2):61-67
Before planning for provision of Consumer Health Information Services, the librarian and administration must anticipate the problems encountered in sharing funds, personnel, space, and materials with an existing medical or patient education library. Establishing new space within or outside the hospital, or participating in community projects which meet consumer health information needs, are important considerations for planners. This article sets forth the place of some CHI services in the hospital setting, and how they relate to other library services. Differences between hospital library support for Patient Education and for Consumer Health Information services are discussed. 相似文献
66.
Journal searching in non-MEDLINE resources on Internet Web sites 总被引:1,自引:0,他引:1
Lingle VA 《Medical reference services quarterly》1997,16(3):27-43
Internet access to the medical journal literature is absorbing the attention of all relevant parties, i.e., publishers, journal vendors, librarians, commercial providers, government agencies, and end users. Journal content on the Web sites spans the range from advertising and ordering information for the print version, to table of contents and abstracts, to downloadable full text and graphics of articles. The searching parameters for systems other than MEDLINE also differ extensively with a wide variety of features and resulting retrieval. This discussion reviews a selection of providers of medical information (particularly the journal literature) on the Internet, making a comparison of what is available on Web sites and how it can be searched. 相似文献
67.
68.
69.
70.