全文获取类型
收费全文 | 20901篇 |
免费 | 1337篇 |
专业分类
各国政治 | 790篇 |
工人农民 | 711篇 |
世界政治 | 1500篇 |
外交国际关系 | 560篇 |
法律 | 14481篇 |
中国共产党 | 1篇 |
中国政治 | 138篇 |
政治理论 | 3900篇 |
综合类 | 157篇 |
出版年
2020年 | 403篇 |
2019年 | 464篇 |
2018年 | 550篇 |
2017年 | 625篇 |
2016年 | 633篇 |
2015年 | 554篇 |
2014年 | 572篇 |
2013年 | 2016篇 |
2012年 | 462篇 |
2011年 | 583篇 |
2010年 | 698篇 |
2009年 | 686篇 |
2008年 | 518篇 |
2007年 | 495篇 |
2006年 | 579篇 |
2005年 | 455篇 |
2004年 | 442篇 |
2003年 | 442篇 |
2002年 | 420篇 |
2001年 | 784篇 |
2000年 | 666篇 |
1999年 | 540篇 |
1998年 | 286篇 |
1997年 | 240篇 |
1996年 | 235篇 |
1995年 | 251篇 |
1994年 | 259篇 |
1993年 | 240篇 |
1992年 | 409篇 |
1991年 | 446篇 |
1990年 | 412篇 |
1989年 | 429篇 |
1988年 | 397篇 |
1987年 | 366篇 |
1986年 | 437篇 |
1985年 | 443篇 |
1984年 | 411篇 |
1983年 | 367篇 |
1982年 | 265篇 |
1981年 | 247篇 |
1980年 | 226篇 |
1979年 | 278篇 |
1978年 | 167篇 |
1977年 | 181篇 |
1976年 | 152篇 |
1975年 | 133篇 |
1974年 | 158篇 |
1973年 | 141篇 |
1972年 | 125篇 |
1971年 | 117篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
Presented in this paper are the initial results involving the use of the nose or outer ear as temperature measurement sites to determine the postmortem period of the human corpse. Simple mathematical models for both sites are developed based on cooling curves of five corpses. Analysis of errors between actual and calculated postmortem intervals suggest that in its present form, the described methods would not be suitable for use in accurately determining the time since death of human corpses. 相似文献
92.
93.
D Callahan 《American journal of law & medicine》1992,18(1-2):1-13
Proposals to ration health care in the United States meet a number of objections, symbolic and literal. Nonetheless, an acceptance of the idea of rationing is a necessary first step toward universal health insurance. It must be understood that universal health care requires an acceptance of rationing, and that such an acceptance must precede enactment of a program, if it is to be economically sound and politically feasible. Commentators have argued that reform of the health care system should come before any effort to ration. On the contrary, rationing and reform cannot be separated. The former is the key to the latter, just as rationing is the key to universal health insurance. 相似文献
94.
95.
R. Alan Thompson 《Journal of Police and Criminal Psychology》1997,12(1):61-69
On January 1, 1996, a new law took effect in Texas granting certain state citizens the privilege to carry a concealed handgun
on their person for the first time since 1871. As a result of this dramatic shift in state law, Texas is now among the growing
number of states across the nation who have adopted similar statutory provisions in one form or another. While at least one
empiricals study of citizen’s attitudes toward concealed handgun ownership was conducted prior to the law’s effective date,
no similar efforts were undertakens to assess the beliefs, perceptions and attitudes of the state’s law enforcement officers
about this important social policy. The present study was therefore undertaken in response to the lack of serious attention
which the issue of concealed handgun ownership among private citizens has received as it directly relates to the law enforcement
profession. Subjects for this study (N=327) were drawn from four Texas law enforcement agencies representing various organizational
sizes and missions. While the responses of officers who participated in the study indicate optimism about the law’s potential
to deter various types of crime, they also reflect a certain degree of concerns about concealed handgun ownership among private
citizens especially as this policy directly relates to perceive inadequacies in statemandated requirements and issues affecting
officer safety. 相似文献
96.
Cheldelin Sandra Greenberg Melanie Honeyman Christopher Volpe Maria R. 《Negotiation Journal》2003,19(1):65-67
Negotiation Journal - 相似文献
97.
Book Reviews in This Article:
Getting Rid of Patients: Contradictions in the Socialization of Physicians . By Terry Mizrahi
Physicians and Social Change . By John Colombotos and Corinne Kirchner
Changing Values in Medicine . Edited by Eric J. Cassell and Mark Siegler
Professional Ethics and Primary Care Medicine: Beyond Dilemmas and Decorum . By Harmon L. Smith and Larry R. Churchill
Physician—Patient Decision-Making: A Study in Medical Ethics . By Douglas N. Walton
With Dignity: The Search for Medicare and Medicaid . By Sheri I. David
The Dismissal of Students with Mental Disorders. Legal Issues, Policy Considerations, and Alternative Responses .
Courtroom Toxicology . By Marshall Houts, Randall C. Baselt, and Robert H. Cravey 相似文献
Getting Rid of Patients: Contradictions in the Socialization of Physicians . By Terry Mizrahi
Physicians and Social Change . By John Colombotos and Corinne Kirchner
Changing Values in Medicine . Edited by Eric J. Cassell and Mark Siegler
Professional Ethics and Primary Care Medicine: Beyond Dilemmas and Decorum . By Harmon L. Smith and Larry R. Churchill
Physician—Patient Decision-Making: A Study in Medical Ethics . By Douglas N. Walton
With Dignity: The Search for Medicare and Medicaid . By Sheri I. David
The Dismissal of Students with Mental Disorders. Legal Issues, Policy Considerations, and Alternative Responses .
Courtroom Toxicology . By Marshall Houts, Randall C. Baselt, and Robert H. Cravey 相似文献
98.
99.
100.
The present study examines the extent to which neighborhood and social psychological influences predict childhood violence among 867 African‐American youth. The results showed that neighborhood affluence was the only neighborhood‐level variable to exert a significant influence on childhood violence. Furthermore, childhood violence was significantly related to social psychological influences, such as adopting a street code, associating with violent peers, parental use of violence, and quality parenting. Overall, the findings suggested that simply living in a violent neighborhood does not produce violent children, but that family, peer, and individual characteristics play a large role in predicting violence in childhood. 相似文献