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   31583篇
  免费   1438篇
各国政治   1324篇
工人农民   1338篇
世界政治   2386篇
外交国际关系   1063篇
法律   20181篇
中国共产党   3篇
中国政治   167篇
政治理论   6306篇
综合类   253篇
  2021年   157篇
  2020年   581篇
  2019年   637篇
  2018年   825篇
  2017年   877篇
  2016年   986篇
  2015年   705篇
  2014年   802篇
  2013年   3252篇
  2012年   805篇
  2011年   849篇
  2010年   801篇
  2009年   852篇
  2008年   860篇
  2007年   878篇
  2006年   872篇
  2005年   759篇
  2004年   777篇
  2003年   698篇
  2002年   717篇
  2001年   1177篇
  2000年   1084篇
  1999年   875篇
  1998年   486篇
  1997年   384篇
  1996年   366篇
  1995年   372篇
  1994年   395篇
  1993年   367篇
  1992年   563篇
  1991年   599篇
  1990年   571篇
  1989年   562篇
  1988年   553篇
  1987年   548篇
  1986年   584篇
  1985年   581篇
  1984年   495篇
  1983年   475篇
  1982年   395篇
  1981年   366篇
  1980年   302篇
  1979年   426篇
  1978年   259篇
  1977年   219篇
  1976年   194篇
  1975年   205篇
  1974年   239篇
  1973年   183篇
  1972年   184篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
241.
242.
243.
244.
Dr. Wilton Marion Krogman was one of the major founders of physical and forensic anthropology in the United States. His extraordinary career spanned nearly six decades, and he was universally admired and respected for his scholarship, teaching, research, wit, and humanity. While studies based on human skeletal remains have long been used to assist the medicolegal system, the late Dr. Krogman can be credited with uniting these areas into the discipline of forensic anthropology. His "Guide to the Identification of Human Skeletal Material" (1939) in the F.B.I. Law Enforcement Bulletin became the foundation of this discipline; his monumental book The Human Skeleton in Forensic Medicine (updated with the author in 1986) solidified its establishment. The purpose of this paper is to pay tribute to this great man and outline his influence on the development and advancement of forensic anthropology.  相似文献   
245.
Is medical care different? Old questions, new answers   总被引:3,自引:0,他引:3  
This paper examines whether changes in medical markets may be making them more like other markets. The emergence of HMOs and other managed care systems appears to have increased the consumer's potential ability to make better comparative judgments about the price and quality of medical care, and also seems to have made medical care more like other goods. However, the evidence that medical care is a "reputation good" suggests that it is, in this respect, different from other goods. Finally, the social concerns about medical care use necessarily make medical care different.  相似文献   
246.
247.
This paper compares the Medicare prospective payment system (PPS) to four all-payer rate-setting systems that operated under HCFA waiver authority. The study examines the experience of Medicare, Medicaid, and commercial insurers under the two approaches. Data from several American Hospital Association surveys and from Medicaid 2082 report forms are analyzed. The paper concludes that the all-payer waiver programs have been as successful as PPS in controlling the rate of growth in Medicare costs. In addition, Medicaid programs are more successful in controlling their outlays in all-payer rate-setting environments than when they "go alone." Finally, there is no evidence to suggest that hospitals can increase charges in response to greater financial need under either PPS or the state waivers. Nevertheless, it appears that commercial insurers are better able to compete with Blue Cross plans in all-payer rate-setting states than elsewhere.  相似文献   
248.
249.
250.
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