全文获取类型
收费全文 | 14960篇 |
免费 | 206篇 |
国内免费 | 8篇 |
专业分类
教育 | 10924篇 |
科学研究 | 1305篇 |
各国文化 | 98篇 |
体育 | 1190篇 |
综合类 | 7篇 |
文化理论 | 94篇 |
信息传播 | 1556篇 |
出版年
2021年 | 111篇 |
2020年 | 167篇 |
2019年 | 282篇 |
2018年 | 390篇 |
2017年 | 399篇 |
2016年 | 356篇 |
2015年 | 219篇 |
2014年 | 311篇 |
2013年 | 2821篇 |
2012年 | 315篇 |
2011年 | 379篇 |
2010年 | 239篇 |
2009年 | 243篇 |
2008年 | 349篇 |
2007年 | 254篇 |
2006年 | 318篇 |
2005年 | 215篇 |
2004年 | 203篇 |
2003年 | 186篇 |
2002年 | 222篇 |
2001年 | 329篇 |
2000年 | 296篇 |
1999年 | 271篇 |
1998年 | 141篇 |
1997年 | 164篇 |
1996年 | 178篇 |
1995年 | 179篇 |
1994年 | 149篇 |
1993年 | 169篇 |
1992年 | 245篇 |
1991年 | 221篇 |
1990年 | 217篇 |
1989年 | 249篇 |
1988年 | 257篇 |
1987年 | 210篇 |
1986年 | 210篇 |
1985年 | 223篇 |
1984年 | 198篇 |
1983年 | 237篇 |
1982年 | 180篇 |
1981年 | 166篇 |
1980年 | 164篇 |
1979年 | 238篇 |
1978年 | 196篇 |
1977年 | 175篇 |
1976年 | 158篇 |
1975年 | 131篇 |
1974年 | 124篇 |
1973年 | 131篇 |
1971年 | 110篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
D A Kronick 《Bulletin of the Medical Library Association》1979,67(3):297-301
A cooperative acquisition program for monographs for the twelve resource libraries in Region IX of the Regional Medical Library Network is described. Each of the participating libraries has agreed to purchase all books of an assigned publisher which fall within a prescribed subject-format profile. It is hoped that this will help to reduce unnecessary duplication and contribute toward the development of resources in the region. 相似文献
52.
53.
54.
Maxfield DK 《Bulletin of the Medical Library Association》1975,63(3):345-346
55.
D D Hendricks 《Bulletin of the Medical Library Association》1976,64(2):203-211
The South Central Regional Medical Library Program, Region IX in the national network of medical libraries, was one of the last to be organized and funded. The particular makeup of this organization has permitted a good deal of flexibility in the identification and implementation of various types of network services and activities. The following is a brief account of some of these network functions during the first five years relating the successes and failures in network strategies and describing the further evolution of programs and refinement of a regional plan which will advance network services. 相似文献
56.
This article first looks at the relationship between museums and art galleries and their potential audiences and, in particular, the under-represented sector of young visitors. It examines the main findings from the limited research available on young visitors, and goes on to discuss theories delineating the differences between the cultures, identities and values of culture consumers and culture providers. The second part of the article looks at what specific museums have done towards being more inclusive in their appeal, and then reports the findings of a survey of young people in relation to New Zealand's Auckland Art Gallery. The survey found that young people's ideas of what constitutes modern, relevant art do not match standard art criteria, and that most exhibitions and marketing methods do not mesh with their worldview. The article concludes by using data from the survey to suggest ways of engaging more young people with public art galleries. 相似文献
57.
Thanh Tin Tang Nick Craswell David Hawking Kathy Griffiths Helen Christensen 《Information Retrieval》2006,9(2):207-225
When searching for health information, results quality can be judged against available scientific evidence: Do search engines return advice consistent with evidence based medicine? We compared the performance of domain-specific health and depression search engines against a general-purpose engine (Google) on both relevance of results and quality of advice. Over 101 queries, to which the term ‘depression’ was added if not already present, Google returned more relevant results than those of the domain-specific engines. However, over the 50 treatment-related queries, Google returned 70 pages recommending for or against a well studied treatment, of which 19 strongly disagreed with the scientific evidence. A domain-specific index of 4 sites selected by domain experts was only wrong in 5 of 50 recommendations. Analysis suggests a tension between relevance and quality. Indexing more pages can give a greater number of relevant results, but selective inclusion can give better quality. 相似文献
58.
Subjective Social Location: Data From 21 Nations 总被引:1,自引:0,他引:1
59.
60.