全文获取类型
收费全文 | 28513篇 |
免费 | 383篇 |
国内免费 | 65篇 |
专业分类
教育 | 20442篇 |
科学研究 | 2712篇 |
各国文化 | 280篇 |
体育 | 2022篇 |
综合类 | 57篇 |
文化理论 | 234篇 |
信息传播 | 3214篇 |
出版年
2021年 | 291篇 |
2020年 | 405篇 |
2019年 | 600篇 |
2018年 | 844篇 |
2017年 | 894篇 |
2016年 | 823篇 |
2015年 | 544篇 |
2014年 | 770篇 |
2013年 | 5273篇 |
2012年 | 722篇 |
2011年 | 736篇 |
2010年 | 669篇 |
2009年 | 624篇 |
2008年 | 655篇 |
2007年 | 643篇 |
2006年 | 651篇 |
2005年 | 571篇 |
2004年 | 483篇 |
2003年 | 448篇 |
2002年 | 440篇 |
2001年 | 633篇 |
2000年 | 571篇 |
1999年 | 458篇 |
1998年 | 281篇 |
1997年 | 316篇 |
1996年 | 325篇 |
1995年 | 247篇 |
1994年 | 266篇 |
1993年 | 244篇 |
1992年 | 382篇 |
1991年 | 363篇 |
1990年 | 420篇 |
1989年 | 390篇 |
1988年 | 331篇 |
1987年 | 348篇 |
1986年 | 338篇 |
1985年 | 354篇 |
1984年 | 313篇 |
1983年 | 281篇 |
1982年 | 253篇 |
1981年 | 233篇 |
1980年 | 236篇 |
1979年 | 350篇 |
1978年 | 273篇 |
1977年 | 214篇 |
1976年 | 197篇 |
1975年 | 191篇 |
1974年 | 188篇 |
1973年 | 186篇 |
1971年 | 192篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
992.
This paper attempts to compare some of the available models for journal acquisition and indicates their utility in library acquisitions. 相似文献
993.
R L Wood 《Journal of learning disabilities》1988,21(6):327-32, 351
994.
995.
S Plann 《American annals of the deaf》1992,137(1):48-55
This article examines developments surrounding the establishment of the school for the deaf in Madrid in the 19th century and the role played by Roberto Prádez, Spain's first deaf teacher of the deaf, during the school's first three decades of existence. Although he has been neglected historically, Prádez is a founding father of deaf education, a heroic figure who contributed crucially to the establishment and operation of Spain's first state-sponsored school. This study underscores the need to reexamine the historical record to recover Spanish deaf history. 相似文献
996.
997.
998.
999.
1000.
The present study examined the influence of Santa Claus and the Easter Bunny on children's donations near the Easter season. Kindergarten and first-grade children were asked to tell stories about Santa Claus, the Easter Bunny, or pets, for which they received nine pieces of gum. They were then encouraged to donate any amount of their gum to handicapped children. Main effects were found only for grade, with first-grade children donating significantly more than kindergarten children. In addition, a significant interaction was obtained between grade and type of story elicited from the child. This interaction revealed that for kindergarten children, the type of story failed to influence donations, whereas for first-grade children, stories referring to Santa Claus increased donations relative to stories told about the Easter Bunny or pets. 相似文献