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   20077篇
  免费   616篇
  国内免费   1篇
管理学   2662篇
民族学   117篇
人口学   1751篇
丛书文集   74篇
教育普及   1篇
理论方法论   1827篇
综合类   182篇
社会学   10287篇
统计学   3793篇
  2023年   131篇
  2021年   136篇
  2020年   353篇
  2019年   528篇
  2018年   625篇
  2017年   812篇
  2016年   632篇
  2015年   416篇
  2014年   581篇
  2013年   3620篇
  2012年   744篇
  2011年   699篇
  2010年   510篇
  2009年   417篇
  2008年   547篇
  2007年   506篇
  2006年   534篇
  2005年   422篇
  2004年   435篇
  2003年   358篇
  2002年   380篇
  2001年   478篇
  2000年   426篇
  1999年   417篇
  1998年   330篇
  1997年   268篇
  1996年   292篇
  1995年   298篇
  1994年   252篇
  1993年   262篇
  1992年   307篇
  1991年   301篇
  1990年   295篇
  1989年   261篇
  1988年   249篇
  1987年   205篇
  1986年   235篇
  1985年   257篇
  1984年   224篇
  1983年   200篇
  1982年   169篇
  1981年   138篇
  1980年   159篇
  1979年   174篇
  1978年   140篇
  1977年   115篇
  1976年   93篇
  1975年   94篇
  1974年   95篇
  1973年   70篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
361.
The author assesses the patterns of family extension in Peru by examining variations in family composition over the family life cycle. The amount and type of extension among Peruvian families at successive stages of family development are examined. The relative importance of general overlap and of child and spouse replacement mechanisms as processes that help to ensure the viability of residential family units is studied. The empirical analysis is based on a 1970-1971 survey of a national sample of Peruvian households  相似文献   
362.
Using data obtained from a village census completed in 1977, the authors examine the importance of economic and social factors in migration decisions in the village of Ongaia, Papua New Guinea. The effects on migration of opportunities at place of destination, pressures in place of origin, and connections between town and village are investigated; motivations for return migration are discussed  相似文献   
363.
The author analyzes differences in naturalization baetween "old" groups of migrants coming primarily from Northern and Western Europe and "new" migrants from Southern and Eastern Europe. The primary focus is on naturalization as a measure of assimilation into the United States. Reasons for differences between the two groups are discussed  相似文献   
364.
365.
Summary Analysis of data from various phases of a study of post-partum amenorrhoea in Bangladesh illustrated good aggregate consistency of response on menstrual status, but less individual consistency on duration of post-partum amenorrhoea. Using life table techniques, the median duration of amenorrhoea was calculated as 19.9 months for women with births between February and September 1974. There were substantial seasonal variations in duration, with the median decreasing from 21.5 months for women with February births to 16.9 months for those with September births. By contrast, the median duration of post-partum amenorrhoea varies by only two months for women in the lowest and highest quartiles of weight and weight for height. The seasonal pattern was similar for all weight groups.  相似文献   
366.
A survey of perceived morbidity was carried out in rural population in eight villages and four wards of Saoner town, covering a total population of 8,876. The nature of illness was assessed by weekly visits to the families. History regarding treatment taken for disease and its source was taken. The overall incidence of perceived morbidity was 176.35 spells of sickness per 1000 population per month. Health care agency was contacted for 36.7 per cent spells of sickness. Utilisation of health services was found to be affected significantly by factors like age (chi 2 = 138.36), literacy (chi 2 = 14.123), type of occupation (chi 2 = 433.74), nature of illness (chi 2 = 83.578) and accessibility of health services. A health behaviour model of the population has also been discussed in this paper.  相似文献   
367.
Premi MK 《Social action》1981,31(3):291-310
The author examines the role of migration in the urbanization process in India during the two decades of development planning from 1951 to 1971. Trends in migration are analyzed according to selected migrant characteristics. The relationship between economic conditions, migration, and the urbanization process is studied, and trends in urbanization to the year 2001 are estimated.  相似文献   
368.
369.
Jones JM  McNeely RL 《Child welfare》1981,60(3):148-160
An innovative model for the training of social welfare students in the special skills essential in child welfare work is predicated upon a classification system of children at risk and a continuum of services.  相似文献   
370.
"This article discusses the nature of out-migration from the United States to Canada and assesses the consequences of such emigration for the two countries. It is concluded that, excluding the British born population, being foreign born is a handicap in Canada, not as asset, and the American born overcome this occupational disadvantage by virtue of their higher social origins and education."  相似文献   
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