全文获取类型
收费全文 | 29980篇 |
免费 | 377篇 |
国内免费 | 66篇 |
专业分类
教育 | 21264篇 |
科学研究 | 2385篇 |
各国文化 | 319篇 |
体育 | 2579篇 |
综合类 | 65篇 |
文化理论 | 190篇 |
信息传播 | 3621篇 |
出版年
2021年 | 276篇 |
2020年 | 416篇 |
2019年 | 617篇 |
2018年 | 801篇 |
2017年 | 906篇 |
2016年 | 820篇 |
2015年 | 535篇 |
2014年 | 737篇 |
2013年 | 5741篇 |
2012年 | 702篇 |
2011年 | 745篇 |
2010年 | 645篇 |
2009年 | 655篇 |
2008年 | 649篇 |
2007年 | 620篇 |
2006年 | 620篇 |
2005年 | 558篇 |
2004年 | 694篇 |
2003年 | 584篇 |
2002年 | 594篇 |
2001年 | 583篇 |
2000年 | 513篇 |
1999年 | 425篇 |
1998年 | 250篇 |
1997年 | 268篇 |
1996年 | 311篇 |
1995年 | 269篇 |
1994年 | 269篇 |
1993年 | 254篇 |
1992年 | 377篇 |
1991年 | 369篇 |
1990年 | 378篇 |
1989年 | 406篇 |
1988年 | 339篇 |
1987年 | 372篇 |
1986年 | 351篇 |
1985年 | 391篇 |
1984年 | 356篇 |
1983年 | 332篇 |
1982年 | 282篇 |
1981年 | 254篇 |
1980年 | 234篇 |
1979年 | 351篇 |
1978年 | 289篇 |
1977年 | 225篇 |
1976年 | 248篇 |
1975年 | 207篇 |
1974年 | 211篇 |
1973年 | 194篇 |
1971年 | 208篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
61.
62.
63.
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
64.
65.
McCarthy LH 《Medical reference services quarterly》1996,15(4):63-71
66.
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
67.
68.
Brazin LR 《Medical reference services quarterly》1993,12(3):13-27
This is an update of an earlier article listing directories, journal articles, and general books that aid the librarian, resident, or medical student in finding information on residency and fellowship programs. The article also gives suggestions for building a file of program catalogs related to residencies, fellowships, and clerkships and related materials. 相似文献
69.
70.
M E Funk 《Bulletin of the Medical Library Association》1978,66(2):223-227
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