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   33580篇
  免费   571篇
  国内免费   26篇
教育   23718篇
科学研究   3393篇
各国文化   324篇
体育   2626篇
综合类   28篇
文化理论   326篇
信息传播   3762篇
  2022年   227篇
  2021年   357篇
  2020年   549篇
  2019年   817篇
  2018年   1146篇
  2017年   1140篇
  2016年   1031篇
  2015年   613篇
  2014年   958篇
  2013年   6317篇
  2012年   896篇
  2011年   893篇
  2010年   711篇
  2009年   696篇
  2008年   764篇
  2007年   714篇
  2006年   651篇
  2005年   597篇
  2004年   580篇
  2003年   546篇
  2002年   536篇
  2001年   700篇
  2000年   671篇
  1999年   550篇
  1998年   317篇
  1997年   371篇
  1996年   389篇
  1995年   332篇
  1994年   293篇
  1993年   299篇
  1992年   477篇
  1991年   448篇
  1990年   476篇
  1989年   465篇
  1988年   411篇
  1987年   459篇
  1986年   411篇
  1985年   471篇
  1984年   370篇
  1983年   324篇
  1982年   275篇
  1981年   234篇
  1980年   217篇
  1979年   368篇
  1978年   271篇
  1977年   228篇
  1976年   207篇
  1975年   203篇
  1974年   209篇
  1971年   187篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
102.
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   
103.
104.
A user study of the Index Medicus done at the Walter Reed Army Medical Center included responses from a group of sixty researchers, clinicians, residents, and interns. An analysis of the questionnaire shows that, while all respondents use the Index Medicus, most use it to search for a specific subject or a specific author reference. Comments received were critical of the delay from the time of journal publication until the appearance of its citation in Index Medicus. Suggestions were offered concerning the type of publication most of the respondents would prefer.  相似文献   
105.
Adequate research in the peripheral field of medical geography requires familiarity with the literature of medicine, geography, and other environmentally oriented fields. The pertinent literature of the two primary disciplines, as well as that of anthropology, nutrition, and human bioclimatology, is surveyed from a bibliographical point of view. A brief review of historical sources is presented, followed by a discussion of the contemporary organizations, both international and national, active in the field. Emphasis is placed on the publishing programs and projects, maps, atlases, symposia, reports, and other literature sponsored or stimulated by these organizations. Regional bibliographical surveys for East Africa, India, and the Soviet Union are also noted. Pertinent aspects of bibliographies, indexes, abstracts, library card catalogs and accession lists, and other resources are listed, with emphasis on the various subject headings and other approaches to them. Throughout, the sources of information are approached from a multidisciplinary and interdisciplinary viewpoint.  相似文献   
106.
107.
108.
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   
109.
110.
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