全文获取类型
收费全文 | 25378篇 |
免费 | 344篇 |
国内免费 | 32篇 |
专业分类
教育 | 17638篇 |
科学研究 | 3001篇 |
各国文化 | 232篇 |
体育 | 1959篇 |
综合类 | 23篇 |
文化理论 | 251篇 |
信息传播 | 2650篇 |
出版年
2021年 | 258篇 |
2020年 | 373篇 |
2019年 | 508篇 |
2018年 | 727篇 |
2017年 | 729篇 |
2016年 | 700篇 |
2015年 | 462篇 |
2014年 | 649篇 |
2013年 | 4284篇 |
2012年 | 583篇 |
2011年 | 592篇 |
2010年 | 539篇 |
2009年 | 458篇 |
2008年 | 516篇 |
2007年 | 495篇 |
2006年 | 467篇 |
2005年 | 416篇 |
2004年 | 458篇 |
2003年 | 407篇 |
2002年 | 391篇 |
2001年 | 705篇 |
2000年 | 573篇 |
1999年 | 446篇 |
1998年 | 245篇 |
1997年 | 315篇 |
1996年 | 287篇 |
1995年 | 233篇 |
1994年 | 264篇 |
1993年 | 220篇 |
1992年 | 357篇 |
1991年 | 352篇 |
1990年 | 375篇 |
1989年 | 370篇 |
1988年 | 323篇 |
1987年 | 328篇 |
1986年 | 319篇 |
1985年 | 389篇 |
1984年 | 295篇 |
1983年 | 263篇 |
1982年 | 247篇 |
1981年 | 219篇 |
1980年 | 218篇 |
1979年 | 314篇 |
1978年 | 251篇 |
1977年 | 214篇 |
1976年 | 175篇 |
1975年 | 193篇 |
1974年 | 178篇 |
1973年 | 188篇 |
1971年 | 178篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
A. V. Suvorinov A. V. Anyutin V. S. Sokolovskaya V. I. Fedorov 《Scientific and Technical Information Processing》2008,35(2):63-67
We consider some issues of the development of the national information infrastructure in the field of innovation, including a national system of accounting for the results of scientific and technical activities (RSTA) and a national new-generation research computer network (NNGRCN). The current state of the national system of scientific and technical information and its resources for information support of innovation processes are analyzed. In the context of further development of the Commonwealth of Independent States (CIS), we propose a Conception of scientific and technical support for programs and projects of NIS member-states in the field of innovation, making it possible to incorporate the existing innovation-oriented information resources into a joint distributed integrated information system as well as to create new information resources and technologies. 相似文献
52.
53.
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
54.
Long SS 《Medical reference services quarterly》1994,13(4):69-75
The expertise of colleagues and experience gained through professional organizations is an overlooked resource for adding value to reference service. Collegial networks must be nurtured. They deserve the support and investment of the institution. 相似文献
55.
56.
Pfeiffer S 《Medical reference services quarterly》1997,16(2):23-25
AAMC STAT is a new, weekly electronic newsletter produced by the American Association of Medical Colleges. It provides coverage of national news related to academic medicine. This article briefly reviews the electronic publication and gives directions for subscribing to AAMC STAT. 相似文献
57.
58.
59.
60.
Stock CJ 《Bulletin of the Medical Library Association》1977,65(1):53-57
You are invited to Seattle for the 1977 Annual Meeting, its theme to be "Change, Comparison, and Controversy." Suggestions are made for activities in Seattle and the Pacific Northwest, including the cohost city, Vancouver, British Columbia. 相似文献