全文获取类型
收费全文 | 1627篇 |
免费 | 68篇 |
专业分类
各国政治 | 108篇 |
工人农民 | 127篇 |
世界政治 | 129篇 |
外交国际关系 | 88篇 |
法律 | 786篇 |
中国政治 | 51篇 |
政治理论 | 397篇 |
综合类 | 9篇 |
出版年
2023年 | 15篇 |
2022年 | 11篇 |
2021年 | 16篇 |
2020年 | 44篇 |
2019年 | 48篇 |
2018年 | 69篇 |
2017年 | 56篇 |
2016年 | 75篇 |
2015年 | 44篇 |
2014年 | 51篇 |
2013年 | 256篇 |
2012年 | 54篇 |
2011年 | 65篇 |
2010年 | 46篇 |
2009年 | 54篇 |
2008年 | 56篇 |
2007年 | 58篇 |
2006年 | 51篇 |
2005年 | 53篇 |
2004年 | 37篇 |
2003年 | 37篇 |
2002年 | 33篇 |
2001年 | 39篇 |
2000年 | 35篇 |
1999年 | 33篇 |
1998年 | 13篇 |
1997年 | 22篇 |
1996年 | 14篇 |
1995年 | 26篇 |
1994年 | 22篇 |
1993年 | 20篇 |
1992年 | 21篇 |
1991年 | 26篇 |
1990年 | 17篇 |
1989年 | 12篇 |
1988年 | 8篇 |
1987年 | 10篇 |
1986年 | 15篇 |
1985年 | 14篇 |
1984年 | 12篇 |
1983年 | 16篇 |
1982年 | 11篇 |
1981年 | 12篇 |
1978年 | 9篇 |
1977年 | 6篇 |
1974年 | 7篇 |
1973年 | 4篇 |
1968年 | 4篇 |
1967年 | 6篇 |
1966年 | 4篇 |
排序方式: 共有1695条查询结果,搜索用时 15 毫秒
21.
22.
R G Evans 《Journal of health politics, policy and law》1983,8(1):1-43
During the 1970s the share of health care expenditure in Canadian GNP remained roughly stable, in the range of 7-71/2 percent of GNP, in marked contrast to its escalation in most other countries (the U.S. in particular) and to previous Canadian experience. The shift to a stable pattern coincided with the completion of the Canadian system of universal comprehensive public hospital and medical care insurance. This paper explores how and why the public insurance system served to contain cost escalation. It then discusses the inadequacy of expenditure experience per se as a basis for health system evaluation--the same data will support claims of both "underfunding" and "spiralling costs." More serious questions involve the influence of alternative patterns of health care funding and delivery on the effectiveness and efficiency of care provision, and the resulting distributional patterns of care and income. A brief sketch is given of the present situation and future possibilities of Canadian health care under these heads. 相似文献
23.
H C Lee E M Pagliaro K M Berka N L Folk D T Anderson G Ruano T P Keith P Phipps G L Herrin D D Garner 《Journal of forensic sciences》1991,36(2):320-330
Deoxyribonucleic acid (DNA) was isolated from a number of spongy and compact human bone tissue specimens, and the yield was estimated on a "per milligram of starting tissue" basis. DNA was, in addition, isolated from a number of corresponding blood and bone tissue specimens. Spectrophotofluorometry and ethidium bromide visualization on minigels were used to estimate the quantity and degree of degradation of DNA. The DNA from several blood-bone pairs is shown to give concordant restriction fragment length polymorphism (RFLP) typing results by two different typing protocols with five different single-locus probes. DNA from several additional blood-bone pairs is shown to give concordant results for human leucocyte antigen (HLA)-DQ alpha phenotypes following polymerase chain reaction (PCR) amplification and hybridization to specific allele-specific oligonucleotide (ASO) probes, and for the variable numbers of tandem repeats (VNTR) length polymorphisms 3' to the human apolipoprotein B (APOB) gene following PCR amplification with specific primers and analysis of the products by electrophoresis and ethidium bromide visualization. 相似文献
24.
25.
26.
27.
28.
Donna Lee Van Cott 《拉美政治与社会》2003,45(2):1-39
The central question of this article is why indigenous social movements formed electorally viable political parties in Latin America in the 1990s. This development represents a new phenomenon in Latin America, where ethnic parties have been both rare and unpopular among voters. Institutional reforms in six South American countries are examined to see if the creation and success of these parties can be correlated with changes in electoral systems, political party registration requirements, or the administrative structure of the state. The study concludes that institutional change is likely to be a necessary but not sufficient condition for the emergence and electoral viability of ethnic parties. 相似文献
29.
30.