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   52520篇
  免费   2094篇
  国内免费   30篇
  2020年   581篇
  2019年   740篇
  2018年   1067篇
  2017年   1064篇
  2016年   1117篇
  2015年   746篇
  2014年   917篇
  2013年   4563篇
  2012年   1659篇
  2011年   1808篇
  2010年   1061篇
  2009年   1077篇
  2008年   1645篇
  2007年   1616篇
  2006年   1432篇
  2005年   1292篇
  2004年   1272篇
  2003年   1157篇
  2002年   1192篇
  2001年   1759篇
  2000年   1661篇
  1999年   1280篇
  1998年   670篇
  1997年   580篇
  1996年   522篇
  1995年   520篇
  1994年   502篇
  1993年   522篇
  1992年   1015篇
  1991年   965篇
  1990年   952篇
  1989年   859篇
  1988年   819篇
  1987年   812篇
  1986年   809篇
  1985年   866篇
  1984年   674篇
  1983年   577篇
  1982年   478篇
  1979年   665篇
  1978年   491篇
  1976年   450篇
  1975年   594篇
  1974年   624篇
  1973年   601篇
  1972年   546篇
  1971年   477篇
  1968年   543篇
  1967年   543篇
  1966年   477篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
211.
212.
213.
The purpose of this study was to investigate differences in scores of 59 mentally retarded adults (mild, moderate, severe, or profound), 133 advantaged, and 130 disadvantaged (low income) children in Grades 1, 2, 3 on the Primary Measures of Music Audiation. Test-retest reliabilities for the Tonal and Rhythm subtests were .81 and .86, respectively, for the retarded group. Analysis of variance indicated that the mildly retarded children performed significantly better than other groups of retarded children on these two tests. 2 x 3 analyses of variance indicated that third graders from both advantaged and disadvantaged groups performed significantly better than the first or second graders on both subtests and that advantaged children performed significantly better than the disadvantaged. However, disadvantaged children made greater gains, especially for third graders, than the advantaged.  相似文献   
214.
215.
216.
The Rosenberg Self-esteem Scale was administered to 550 14- and 16-yr.-old (+/- 6 mo.) girls. Self-esteem scores were categorized by weight and weight by height. Scores on the Quetelet Index for obesity were correlated with self-esteem scores. Mean self-esteem of the low- and middle-weight by height group was significantly higher than the mean of the high-weight by height group. In analyzing weight alone, the self-esteem of the middle-weight group was significantly higher than the self-esteem of the high-weight group. The correlation of the obesity index and self-esteem indicated that as weight increased self-esteem decreased.  相似文献   
217.
From a random sample of 49 patients suffering from torticollis spasmodicus and dependence on alcohol or medicaments, 6 have been selected and are discussed with i view to findings possible mutual influences between the disorders. In particular, premorbid accentuation of personality presented itself as a potential risk factor leading to both tortocollis and alcoholism. In various cases, the patient makes use of alcohol for self-treatment of extrapyramidal-motor symptoms. But such phenomenological developments are preceded by varied constellations of conditions, that have to be taken into account in the treatment.  相似文献   
218.
219.
Midlife depression and the "empty nest" syndrome in Indian women   总被引:2,自引:0,他引:2  
  相似文献   
220.
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