全文获取类型
收费全文 | 7146篇 |
免费 | 460篇 |
专业分类
各国政治 | 338篇 |
工人农民 | 226篇 |
世界政治 | 466篇 |
外交国际关系 | 233篇 |
法律 | 5024篇 |
中国政治 | 34篇 |
政治理论 | 1250篇 |
综合类 | 35篇 |
出版年
2020年 | 156篇 |
2019年 | 166篇 |
2018年 | 177篇 |
2017年 | 207篇 |
2016年 | 210篇 |
2015年 | 196篇 |
2014年 | 181篇 |
2013年 | 741篇 |
2012年 | 155篇 |
2011年 | 168篇 |
2010年 | 205篇 |
2009年 | 225篇 |
2008年 | 165篇 |
2007年 | 159篇 |
2006年 | 169篇 |
2005年 | 164篇 |
2004年 | 176篇 |
2003年 | 159篇 |
2002年 | 138篇 |
2001年 | 309篇 |
2000年 | 250篇 |
1999年 | 227篇 |
1998年 | 97篇 |
1997年 | 65篇 |
1996年 | 69篇 |
1995年 | 80篇 |
1994年 | 86篇 |
1993年 | 89篇 |
1992年 | 151篇 |
1991年 | 156篇 |
1990年 | 145篇 |
1989年 | 155篇 |
1988年 | 122篇 |
1987年 | 137篇 |
1986年 | 126篇 |
1985年 | 132篇 |
1984年 | 101篇 |
1983年 | 116篇 |
1982年 | 82篇 |
1981年 | 78篇 |
1980年 | 55篇 |
1979年 | 108篇 |
1978年 | 69篇 |
1977年 | 58篇 |
1976年 | 50篇 |
1975年 | 47篇 |
1974年 | 55篇 |
1973年 | 55篇 |
1972年 | 44篇 |
1968年 | 40篇 |
排序方式: 共有7606条查询结果,搜索用时 15 毫秒
921.
A new method was tested for estimating time after death in the middle range of postmortem interval (weeks). Creatinine muscular concentration in human cadaver is positively correlated to postmortem estimation. Temperature should be mainly related to the creatinine transformation rate. A stronger correlation was found at 11 degrees C up to 30 days and at 20 degrees Celsius up to 15 days. 相似文献
922.
Adda B. Bozeman 《Society》1994,31(5):23-31
Among her books are Conflict in Africa: Concepts and Realities; The Future of Law in a Multicultural World;and Strategic Intelligence and Statecraft;and Politics and Culture in International History: From the Acient Near East to the Opening of the Modern Age,a new edition of which has been published by Transaction. 相似文献
923.
This paper deals with double lobbying: several bureaucratsparticipate in joint lobbying to get a high total departmental budget, butthey also engage in antagonistic lobbying to reap as high a share of thetotal budget as possible. The antagonistic lobbyingconstitutes a contest among the bureaucrats. This papercharacterizes the Nash equilibria in lobbying and shows inwhich way exogenously fixed bureaucratic incomes induce thesame or different lobbying behavior as incentive incomes. 相似文献
924.
925.
926.
927.
Due to an awareness of the frequency of child abuse and lack of a single instrument to assess the extent of exposure to both the abusive and supportive environments provided by parents, a 70 item inventory (the EASE-PI) was developed that is a self-report on how both mother and father treated the respondent. A factor analysis, which was subsequently replicated, revealed three abusive factors (representing emotional, physical, and sexual abusiveness) and three supportive factors (love/support, promotion of independence, and positive modeling/fairness). The same factors emerged regardless of gender of respondent and gender of parent. The inventory provides a means to investigate the differential and interactive effects of exposure to emotional, physical, and sexual abusiveness and the possible mitigating effects of different types of supportive behaviors by each parent. 相似文献
928.
E L Rowan J B Rowan P Langelier 《The Bulletin of the American Academy of Psychiatry and the Law》1990,18(1):79-83
In only nine of approximately 600 cases of child molestation in New Hampshire and Vermont was the perpetrator found to be a woman. Case histories and some testing data show a history of sexual assault as a child, frequent offense in the company of a dominant male partner, and a major disinhibition as a result of severe character disorder or limited intelligence. These factors not only interfered with maternal bonding and nurturing behavior but also contributed to suspension of judgment about the appropriateness of sexual contact with children. 相似文献
929.
930.
Untreated traumatic rupture of the aorta generally results in sudden death. A case with 14 years' survival after an unrecognized traumatic rupture of the aorta is presented. Chronic traumatic aneurysm of the aorta should be kept in mind in a patient who develops sudden symptoms of arteriosclerotic heart disease months to years after a relevant thoracic trauma. 相似文献