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   68438篇
  免费   2995篇
各国政治   4461篇
工人农民   2845篇
世界政治   6131篇
外交国际关系   3788篇
法律   31864篇
中国共产党   9篇
中国政治   752篇
政治理论   20637篇
综合类   946篇
  2021年   405篇
  2020年   1155篇
  2019年   1511篇
  2018年   1657篇
  2017年   1952篇
  2016年   2154篇
  2015年   1820篇
  2014年   2094篇
  2013年   10487篇
  2012年   1595篇
  2011年   1710篇
  2010年   1810篇
  2009年   2053篇
  2008年   1714篇
  2007年   1694篇
  2006年   1878篇
  2005年   1771篇
  2004年   1661篇
  2003年   1455篇
  2002年   1510篇
  2001年   1635篇
  2000年   1368篇
  1999年   1239篇
  1998年   1109篇
  1997年   985篇
  1996年   952篇
  1995年   918篇
  1994年   921篇
  1993年   947篇
  1992年   980篇
  1991年   1015篇
  1990年   953篇
  1989年   974篇
  1988年   962篇
  1987年   981篇
  1986年   965篇
  1985年   1031篇
  1984年   947篇
  1983年   983篇
  1982年   885篇
  1981年   836篇
  1980年   658篇
  1979年   705篇
  1978年   591篇
  1977年   527篇
  1976年   491篇
  1975年   407篇
  1974年   413篇
  1973年   416篇
  1972年   361篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
Child mortality was analyzed in relation to 3 dimensions of reproductive behavior: birth intervals, additional children desired, and contraceptive use. Study data were drawn from a 1978 survey conducted in 2 predominantly rural governorates, Beheira and Kafr El-Sheikh, in lower Egypt. Within each governorate, 2 districts were selected on the basis of their distance from the capital of the governorate, agricultural output by major crops, percent of the population urban, infant mortality rate, and crude birthrate. Within each of the 4 districts, villages were randomly drawn from 3 strata: villages lacking any governmental services; villages with limited services (health center or primary school); and villages served by a combined unit center providing integrated services. A random sample of household heads was selected from household registration records of the provision office of each district. 1200 interviews were obtained from 685 households. Restriction of the sample to women with 1 or more live births, and the elimination of 13 cases with incomplete or inaccurate information, yielded 1010 cases for analysis. The basic measure of actual fertility was birth intervals. For the total sample and within each age category, cumulative fertility is higher the greater the number of child deaths. The data demonstrate a strong relationship between child mortality experience and cumulative fertility. The problem lies in interpreting such results. With some exceptions, birth intervals increased as expected with increasing parity. Women without child death experience displayed longer birth intervals than women who had not lost a child. With the single exception of the 7th parity women, all differences were statistically significant. The data fail to eliminate potential biological influences on subsequent fertility. With biological influences adequately controlled, no behavioral differences remained. Women who experienced child mortality desired greater numbers of additional children than women without child death experience. 19% of respondents were ever users of contraception, with women of low parity the least likely ever to have used contraception.  相似文献   
992.
This article uses a comparative case study approach to relate policy outcomes in terms of family planning to the patterns of political forces observed in the 3 Maghrib states of Algeria, Morocco, and Tunisia. It is suggested that official support for a strong family planning program may be linked to recognition of the problem of low labor absorption and to concrete steps taken to counter the problem. The article discusses different vantage points for approaching the political context of family planning and distinguishes between the use of family planning as an instrument of social policy and as an instrument of economic policy. Ideological reasons for opposition to or support of family planning are then outlined. The colonial experience of the 3 states is differentiated and a chronological account of their family planning programs is provided. The political systems and leadership of the 3 countries are separately discussed in greater detail, after which the influence of elite groups on family planning programs and activities in each country is assessed. Developments in the 3 countries since 1978 are then sketched. The author concludes that the relative importance of policies toward employment and women's status in connection with support for family planning has probably varied over time, with economics playing a greater role in the 1970s. The activities of non-regime political actors were found to be very significant in formulation of population policies in Algeria and Morocco but less so in Tunisia.  相似文献   
993.
994.
995.
996.
The Hon. Editor has received the following letter commenting on Professor Kirk's and Mr. Sloyan's article on the New Covent Garden Market (Vol. 56 Spring 1978). The author is lecturer in applied economics in the Department of Social and Economic Research, University of Glasgow. Mr. Heald's letter is followed by a reply by Professor Kirk on behalf of Mr. Sloyan and himself.  相似文献   
997.
998.
999.
Regan DH 《Michigan law review》1979,77(7):1569-1646
Presented in this essay are suggestions for rewriting Roe vs. Wade, the case that resulted in the establishment of a constitutional right to abortion. Essentially, the argument is 1 of equal protection. It is suggested that abortion be viewed as presenting a problem that might be termed "the law of samaritanism" -- the law regarding obligations imposed on certain individuals to provide assistance to others. In American law it is a deeply rooted principle that an individual is ordinarily not required to volunteer assistance to another individual who is in danger or in need of aid. The argument presented maintains that if a pregnant woman is required to carry the fetus to term and deliver it, then she is being compelled to be a Good Samaritan. It is argued further that if the generally limited scope of obligations of samaritanism under current law are considered, and the special nature of the burdens imposed on pregnant women by laws forbidding abortion are also considered, the obvious conclusion is that the equal protection clause forbids imposition of these burdens on pregnant women. The argument is developed in a lengthy form and calls for an extended discussion of the law of samaritanism. The uniqueness of the abortion case also creates problems as the equal protection argument is approached, and an approach to equal protection questions is sketched.  相似文献   
1000.
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