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   11877篇
  免费   329篇
各国政治   542篇
工人农民   414篇
世界政治   778篇
外交国际关系   446篇
法律   7555篇
中国共产党   1篇
中国政治   44篇
政治理论   2312篇
综合类   114篇
  2020年   122篇
  2019年   163篇
  2018年   227篇
  2017年   233篇
  2016年   269篇
  2015年   183篇
  2014年   219篇
  2013年   1226篇
  2012年   307篇
  2011年   328篇
  2010年   249篇
  2009年   287篇
  2008年   301篇
  2007年   295篇
  2006年   313篇
  2005年   234篇
  2004年   252篇
  2003年   268篇
  2002年   247篇
  2001年   495篇
  2000年   462篇
  1999年   365篇
  1998年   143篇
  1997年   162篇
  1996年   130篇
  1995年   133篇
  1994年   148篇
  1993年   134篇
  1992年   266篇
  1991年   277篇
  1990年   279篇
  1989年   285篇
  1988年   265篇
  1987年   257篇
  1986年   254篇
  1985年   223篇
  1984年   200篇
  1983年   202篇
  1982年   122篇
  1981年   120篇
  1980年   93篇
  1979年   159篇
  1978年   97篇
  1977年   85篇
  1976年   86篇
  1975年   91篇
  1974年   118篇
  1973年   101篇
  1972年   85篇
  1971年   77篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
"Control" of health care costs is often portrayed as a struggle between external, "natural" forces pushing costs up and individuals, groups, and societies trying to resist the inevitable. This picture is false. Control includes strenuous efforts by some to raise costs, and by others to resist those increases, and/or to transfer costs to someone else. But all such forces originate in the purposes and interests of individuals and groups. Health care cost control is a struggle among conflicting interests over the priorities of a society, and claims of "inevitability" are simply part of the political rhetoric of that struggle. International experience supports certain conclusions. First, there is no basis for the claim that limits on expenditure growth must threaten the health of (some members of) a society. Second, there is a substantial variety of experience with cost control. Failure in the United States is often presented as evidence of the impossibility of control, but most other countries have succeeded. Finally, control requires the direct confrontation of interests, with substantial build-up of stress. Advocates of expansion are more successful if they can transform compressive forces into efforts to shift the burden onto someone else. Pressures from providers in every country for "privatization" and/or payment by users reflect this recognition of economic interest.  相似文献   
152.
153.
The article deals with experimental data on design of the method used for detection of sperm, blood and vaginal secretions according to isoelectric points of acid phosphatases, differential diagnosis of ABO group antigens in "mixed" stains as well as detection of phenotype of red cell acid phosphatase by isoelectric focusing method.  相似文献   
154.
The authors reviewed at autopsy the causes of death of 274 patients with evidence of intravenous drug abuse who had been admitted to a large public hospital. There were 127 who died from diseases unrelated to intravenous drug abuse, and in 41% of these, chronic alcoholism was implicated. Deaths from overdose syndromes and drug-related organ pathology comprised only 11% of all cases. The mean age at death was 39 years. There was a male/female ratio of 3.6:1. Half of all patients died from infection--72 from acquired immunodeficiency syndrome (AIDS) alone. These findings indicate that persons hospitalized with a history of intravenous drug abuse usually die from causes other than overdose and that AIDS and chronic alcoholism are significant problems. Emphasis should be placed upon detecting "hidden" intravenous drug deaths to provide more accurate statistical information.  相似文献   
155.
156.
A risk marker analysis of assaulted wives   总被引:1,自引:0,他引:1  
In the wife assault literature, a number of risk markers have been identified. Using the data of the female respondents to the National Family Violence Survey (n = 699), a multivariate analysis was performed to examine which risk factors best differentiated between women involved in nonviolent relationships, verbally aggressive relationships, relationships exhibiting minor physical aggression and severely violent relationships. High levels of marital conflict and lower socioeconomic status emerged as the primary predictors of an increased likelihood of wife assault. Research implications are discussed.  相似文献   
157.
The author analyzes trends in urbanization in Mexico during the twentieth century, with a focus on the impact of rapid industrialization since 1982. Sections are included on the interrelations among economic development, industrialization, and urbanization; stages, levels, and measures of urbanization; the development of the city system in Mexico; and stages in the growth of Mexico City. (SUMMARY IN ENG)  相似文献   
158.
159.
Church GJ 《Time》1993,141(21):30-5, 38-9
The Clinton health-care plan will soon be unveiled. Here is an inside look at what it contains so far.  相似文献   
160.
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