全文获取类型
收费全文 | 7966篇 |
免费 | 53篇 |
国内免费 | 1篇 |
专业分类
管理学 | 378篇 |
民族学 | 185篇 |
人才学 | 17篇 |
人口学 | 514篇 |
丛书文集 | 295篇 |
教育普及 | 1篇 |
理论方法论 | 3350篇 |
现状及发展 | 1篇 |
综合类 | 901篇 |
社会学 | 2121篇 |
统计学 | 257篇 |
出版年
2022年 | 8篇 |
2021年 | 8篇 |
2020年 | 20篇 |
2019年 | 25篇 |
2018年 | 16篇 |
2017年 | 24篇 |
2016年 | 16篇 |
2015年 | 26篇 |
2014年 | 92篇 |
2013年 | 34篇 |
2012年 | 582篇 |
2011年 | 377篇 |
2010年 | 168篇 |
2009年 | 95篇 |
2008年 | 252篇 |
2007年 | 312篇 |
2006年 | 323篇 |
2005年 | 318篇 |
2004年 | 286篇 |
2003年 | 203篇 |
2002年 | 200篇 |
2001年 | 201篇 |
2000年 | 177篇 |
1999年 | 105篇 |
1998年 | 97篇 |
1997年 | 67篇 |
1996年 | 73篇 |
1995年 | 71篇 |
1994年 | 62篇 |
1993年 | 216篇 |
1992年 | 240篇 |
1991年 | 304篇 |
1990年 | 138篇 |
1989年 | 237篇 |
1988年 | 221篇 |
1987年 | 239篇 |
1986年 | 256篇 |
1985年 | 273篇 |
1984年 | 274篇 |
1983年 | 272篇 |
1982年 | 317篇 |
1981年 | 346篇 |
1980年 | 238篇 |
1979年 | 63篇 |
1978年 | 28篇 |
1977年 | 14篇 |
1974年 | 14篇 |
1966年 | 10篇 |
1959年 | 9篇 |
1957年 | 9篇 |
排序方式: 共有8020条查询结果,搜索用时 15 毫秒
151.
USSR. Tsentral'noe Statisticheskoe Upravlenie 《Vestnik statistiki (Moscow, Russia : 1949)》1983,(5):73-80
Statistical data are presented on the family in the USSR. Data from the 1979 census are included on number of families and their distribution by size; distribution of families by size and type, social class, and nationality; number of families including members of different nationalities, 1959-1979; number of marriages and divorces, 1960-1981; changes in age at marriage, 1960-1981; and distribution of births by age of mother, 1969-1970, 1974-1975, and 1980-1981. 相似文献
152.
A study of migration in the region of Wojewodztwo Wloclawskie, Poland, is presented for the period 1975-1979 using a gravitational model. The model includes migration variables and variables measuring the level of socioeconomic development. 相似文献
153.
Clark C Watkins SC Wilson C Banks JA Walsh B Bone M Palloni A Alderson M Crook NR 《Population studies》1983,37(1):137-149
154.
Abstract The practice of post-partum abstinence has been a long-standing tradition in many societies of tropical Africa, yet recent research suggests an erosion of the taboo on post-partum sexual relations as a means of fertility control. The current study among women in the lower income groups in Kinshasa, Zaire, provides evidence of this. There is strong motivation toward child-spacing, as shown by 80 per cent of the women who reported to be currently practising some means of fertility control: 73 per cent with traditional methods, only 7 per cent with modern contraceptives. There appears to be some carry-over of traditional practice, in that abstinence is related to the age and nursing status of the last born child. However, the most widely practised method is withdrawal. This suggests a desire on the part of this population for alternatives to abstinence, an issue with important implications for future family planning programs in Zaire. 相似文献
155.
156.
157.
Zaba B 《Population studies》1979,33(1):79-100
Summary Brass's model life table system, which is a two parameter system based on the logit transformation of survivorship values, has been widely and successfully used to describe age patterns of mortality in many populations. As more reliable information has become available for populations with mortality patterns which differ in important ways from the assumed standard pattern of mortality, a more flexible model system is needed. This paper shows how Brass's system can be expanded into a four-parameter model, and evaluates the performance of the new system by examining how well it can fit observed life table data. 相似文献
158.
159.
160.