全文获取类型
收费全文 | 19399篇 |
免费 | 152篇 |
国内免费 | 18篇 |
专业分类
教育 | 13220篇 |
科学研究 | 2802篇 |
各国文化 | 220篇 |
体育 | 1282篇 |
综合类 | 10篇 |
文化理论 | 176篇 |
信息传播 | 1859篇 |
出版年
2021年 | 148篇 |
2020年 | 217篇 |
2019年 | 356篇 |
2018年 | 466篇 |
2017年 | 479篇 |
2016年 | 406篇 |
2015年 | 315篇 |
2014年 | 404篇 |
2013年 | 3871篇 |
2012年 | 384篇 |
2011年 | 379篇 |
2010年 | 352篇 |
2009年 | 318篇 |
2008年 | 353篇 |
2007年 | 376篇 |
2006年 | 320篇 |
2005年 | 329篇 |
2004年 | 305篇 |
2003年 | 277篇 |
2002年 | 269篇 |
2001年 | 289篇 |
2000年 | 296篇 |
1999年 | 284篇 |
1998年 | 191篇 |
1997年 | 198篇 |
1996年 | 224篇 |
1995年 | 222篇 |
1994年 | 205篇 |
1993年 | 190篇 |
1992年 | 240篇 |
1991年 | 240篇 |
1990年 | 239篇 |
1989年 | 263篇 |
1988年 | 210篇 |
1987年 | 210篇 |
1986年 | 241篇 |
1985年 | 245篇 |
1984年 | 231篇 |
1983年 | 220篇 |
1982年 | 214篇 |
1981年 | 168篇 |
1980年 | 160篇 |
1979年 | 210篇 |
1978年 | 191篇 |
1977年 | 185篇 |
1976年 | 161篇 |
1975年 | 129篇 |
1974年 | 163篇 |
1973年 | 148篇 |
1971年 | 149篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
31.
32.
33.
John Ashworth 《Higher Education Quarterly》1997,51(2):164-188
Since 1990, there has been considerable debate concerning the benefits of the expansion of higher education and the appropriate way to fund such an expansion. This paper demonstrates that three factors are decisive to the individual contemplating higher education: national economic growth; the relative earnings of graduates and non-graduates; the difference between the average and the marginal student. The results, of analysis based on rates of return, reaffirm the view that a proportion of the costs involved in higher education can be transferred to the graduates themselves in the form of loans. However, there appear to be limits to the costs that can be transferred if all students are to judge that undergraduate study is a worthwhile proposition. Notwithstanding this, most students could be lent more income to study than is now the case and indeed an average student would be advised to take any loans despite the greater debt. Marginal students, however, are making a risky private investment and, therefore, any decisions to further expand may result in students not taking up the places. 相似文献
34.
35.
36.
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
37.
38.
39.
Since a sizeable hospital must have a library, it must have a library committee. Like all hospital committees, this one is to help maintain standards of medical care and to mediate between staff and administration. Unlike others, it clusters around one elected member (the chairman) and one employee (the librarian). A dynamic librarian can, and should, influence and inspire the committee's deliberations; and must be able to depend upon the support of the physician members of the committee. 相似文献
40.