全文获取类型
收费全文 | 24058篇 |
免费 | 357篇 |
国内免费 | 268篇 |
专业分类
教育 | 14416篇 |
科学研究 | 4228篇 |
各国文化 | 189篇 |
体育 | 1489篇 |
综合类 | 655篇 |
文化理论 | 193篇 |
信息传播 | 3513篇 |
出版年
2022年 | 176篇 |
2021年 | 433篇 |
2020年 | 386篇 |
2019年 | 291篇 |
2018年 | 330篇 |
2017年 | 414篇 |
2016年 | 368篇 |
2015年 | 531篇 |
2014年 | 839篇 |
2013年 | 2878篇 |
2012年 | 1170篇 |
2011年 | 1267篇 |
2010年 | 1125篇 |
2009年 | 1074篇 |
2008年 | 1051篇 |
2007年 | 1160篇 |
2006年 | 1168篇 |
2005年 | 1298篇 |
2004年 | 740篇 |
2003年 | 580篇 |
2002年 | 521篇 |
2001年 | 453篇 |
2000年 | 369篇 |
1999年 | 337篇 |
1998年 | 226篇 |
1997年 | 200篇 |
1996年 | 175篇 |
1995年 | 142篇 |
1994年 | 172篇 |
1993年 | 162篇 |
1992年 | 184篇 |
1991年 | 170篇 |
1990年 | 164篇 |
1989年 | 170篇 |
1988年 | 133篇 |
1987年 | 140篇 |
1986年 | 150篇 |
1985年 | 170篇 |
1984年 | 161篇 |
1983年 | 160篇 |
1982年 | 120篇 |
1981年 | 132篇 |
1980年 | 109篇 |
1979年 | 154篇 |
1978年 | 153篇 |
1977年 | 108篇 |
1976年 | 108篇 |
1975年 | 101篇 |
1973年 | 101篇 |
1972年 | 86篇 |
排序方式: 共有10000条查询结果,搜索用时 312 毫秒
911.
912.
The need to provide bibliographic access to a collection of original medical illustrations led the Library of the University of California, San Francisco, to search for a bibliographic control system and, not finding a satisfactory one, to develop one of its own, Part 1 of the report details the planning for such a development, including the need for bibliographic control of illustrations, the goals of the proposed system, design decisions and changes required, the type of system chosen, special subjects indexing needs, the required output, and staffing and budgetary needs. 相似文献
913.
IRVIN W. COCKRIEL 《Journal of Educational Measurement》1972,9(1):71-73
Sociometric ranking of ten classrooms was analyzed to determine if Jamrich's procedure was significantly different from conventional indexes. Spearman Rank correlations and Kendall's coefficient of concordance were used to determine degree of correlation, Jamrich's ranked values were not found to be significantly different from conventional scales. 相似文献
914.
915.
916.
John A. Byles D.S.W. 《Child abuse & neglect》1985,9(4):549-554
Several institutions (e.g., child welfare, police, court, health, education, social service) are necessarily involved in the management of child abuse in all communities. The need for better cooperation among them has been acknowledged; inquests into child deaths resulting from abuse have often attributed some blame to faulty communication and/or poor cooperation between the institutions. The Community Child Abuse Team (CCAT) Project was designed by these same institutions in Hamilton, Ontario, to maximize interagency collaboration. The hypothesis, that this "interagency collaboration" model would provide more efficient and effective services to abused children and their families, was never tested. During its 30 months of operation the CCAT program never materialized as planned and funding was terminated. This paper describes selected problems and issues that arose during the struggle to implement the project. The central problematic issue was control. Those responsible for the project lacked the power to insist that the design be adhered to during the initial stage. 相似文献
917.
J W Good 《American annals of the deaf》1973,118(4):496-499
918.
919.
920.