全文获取类型
收费全文 | 22752篇 |
免费 | 135篇 |
国内免费 | 14篇 |
专业分类
教育 | 16485篇 |
科学研究 | 2525篇 |
各国文化 | 66篇 |
体育 | 1192篇 |
综合类 | 11篇 |
文化理论 | 474篇 |
信息传播 | 2148篇 |
出版年
2022年 | 72篇 |
2021年 | 122篇 |
2020年 | 174篇 |
2019年 | 242篇 |
2018年 | 2485篇 |
2017年 | 2400篇 |
2016年 | 1905篇 |
2015年 | 346篇 |
2014年 | 482篇 |
2013年 | 1979篇 |
2012年 | 522篇 |
2011年 | 1021篇 |
2010年 | 1093篇 |
2009年 | 664篇 |
2008年 | 896篇 |
2007年 | 1384篇 |
2006年 | 287篇 |
2005年 | 604篇 |
2004年 | 657篇 |
2003年 | 518篇 |
2002年 | 294篇 |
2001年 | 271篇 |
2000年 | 269篇 |
1999年 | 235篇 |
1998年 | 142篇 |
1997年 | 176篇 |
1996年 | 149篇 |
1995年 | 97篇 |
1994年 | 126篇 |
1993年 | 84篇 |
1992年 | 201篇 |
1991年 | 171篇 |
1990年 | 145篇 |
1989年 | 177篇 |
1988年 | 158篇 |
1987年 | 130篇 |
1986年 | 137篇 |
1985年 | 144篇 |
1984年 | 117篇 |
1983年 | 112篇 |
1982年 | 92篇 |
1981年 | 92篇 |
1980年 | 77篇 |
1979年 | 139篇 |
1978年 | 91篇 |
1977年 | 83篇 |
1976年 | 72篇 |
1974年 | 79篇 |
1973年 | 67篇 |
1972年 | 71篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
V H Holtz 《Journal of the Medical Library Association》1986,74(4):305-314
Questions concerning some of the values we hold as librarians and the goals, standards, and other evaluation tools we derive from them are discussed in the context of the history of our profession and the present period of rapid change. The concepts of stable and changing paradigms and of "scientific communities" provide the foundation for consideration of how a changing conceptual framework can affect values and their application in the evaluation process. One of many possible scenarios for the future is briefly outlined to demonstrate how some traditional values may fare. 相似文献
62.
63.
"Change" is a critical dimension of contemporary experience. Library associations are not exempt, and they change in ways similar to other organizations. According to some authorities, four phases typify the process: diagnosis, design, implementation, and incorporation. Focusing on changes in the Medical Library Association's longstanding program of continuing education, the authors utilize the "phase framework" to chart that association's movement from a management system depending primarily upon volunteers to one in which professional staff figure prominently. The historical review serves a heuristic purpose for individuals and institutions in identifying characteristic features of the change process. 相似文献
64.
65.
K Olschner 《Bulletin of the Medical Library Association》1972,60(1):1-13
This study, an historical survey of medical journals in Louisiana before the outbreak of the Civil War in 1861, revealed that nine journals made an appearance during the period covered-all of them published in New Orleans. Of these, two were French language journals published by a French medical society. The others were all published by individuals rather than by professional societies. Medical practices, interests, and problems of the times were clearly reflected on the pages of the journals. It is evident that medical journalism reached a high plane in the era before the Civil War. Of the nine periodicals, only one emerged as a permanent publication after the War. 相似文献
66.
67.
K M Smith 《Bulletin of the Medical Library Association》1969,57(4):362-367
The history of nursing education in America is briefly told, with the growth of education in institutions of higher learning emphasized. Two trends in nursing education are paralleled by similar developments in nursing literature. The growth of scholarship in nursing is also noted. It is pointed out that nursing is a discipline in its own right, and that training for leadership is required. Continuing education programs are mentioned, together with the increase in nursing literature. Integrated libraries for the health sciences are recommended. 相似文献
68.
69.
70.
Tseng SC Arcand JL Brugger JM Finn M Olson AJ Somers S 《Library resources & technical services》1990,34(2):139-157
Serials, one of the more complicated areas of library technical endeavors, has lacked the benefit of standards for a long time. Even now, with standards beginning to be available, the majority of institutions are not working within standard serials formats. A survey to determine the use of serials standards in libraries was conducted in 1988 by the American Library Association, Resources and Technical Services Division, Serials Section, Committee to Study Serials Standards. In the spring of 1988 a survey was sent to a group encompassing the Association of Research Libraries members, CONSER participants, United States Newspaper Program participants, Microform Project libraries, and some vendors and librarians who attended the Committee meetings on a regular basis. The survey questionnaire assessed the current level of serials standards awareness of librarians and vendors. Topics included the type of serials systems used, standards relevant to serials control and union listing and whether or not they are implemented, types and levels of training staff received in the application of standards, benefits of the standards, and areas where standards are most needed. 相似文献