全文获取类型
收费全文 | 18022篇 |
免费 | 1173篇 |
专业分类
各国政治 | 729篇 |
工人农民 | 850篇 |
世界政治 | 1194篇 |
外交国际关系 | 573篇 |
法律 | 12540篇 |
中国共产党 | 4篇 |
中国政治 | 115篇 |
政治理论 | 3063篇 |
综合类 | 127篇 |
出版年
2023年 | 83篇 |
2021年 | 92篇 |
2020年 | 446篇 |
2019年 | 461篇 |
2018年 | 585篇 |
2017年 | 596篇 |
2016年 | 681篇 |
2015年 | 521篇 |
2014年 | 557篇 |
2013年 | 1880篇 |
2012年 | 513篇 |
2011年 | 528篇 |
2010年 | 554篇 |
2009年 | 583篇 |
2008年 | 539篇 |
2007年 | 522篇 |
2006年 | 544篇 |
2005年 | 466篇 |
2004年 | 458篇 |
2003年 | 377篇 |
2002年 | 422篇 |
2001年 | 690篇 |
2000年 | 621篇 |
1999年 | 486篇 |
1998年 | 252篇 |
1997年 | 174篇 |
1996年 | 197篇 |
1995年 | 199篇 |
1994年 | 171篇 |
1993年 | 178篇 |
1992年 | 304篇 |
1991年 | 313篇 |
1990年 | 299篇 |
1989年 | 278篇 |
1988年 | 308篇 |
1987年 | 263篇 |
1986年 | 328篇 |
1985年 | 316篇 |
1984年 | 247篇 |
1983年 | 231篇 |
1982年 | 179篇 |
1981年 | 155篇 |
1980年 | 143篇 |
1979年 | 219篇 |
1978年 | 117篇 |
1977年 | 92篇 |
1975年 | 94篇 |
1974年 | 128篇 |
1973年 | 79篇 |
1972年 | 80篇 |
排序方式: 共有10000条查询结果,搜索用时 8 毫秒
211.
212.
213.
Nelson Joaquin Salazar Recinos Pedro Caldentey del Pozo M. Carmen Delgado 《Bulletin of Latin American research》2023,42(5):692-706
This article builds a composite index, the Central American Integration Index (IIC-AMPI), to measure economic integration. This index utilises a robust methodology and conceptual framework. The study shows that IIC-AMPI is responsive to variable changes and resistant to outliers. The findings indicate that the Deep Integration Process initiative dominates the current integration trend, as seen in the regional average score from 2015 to 2017, aligning with Guatemala and Honduras. Nicaragua demonstrates the most consistent progress, while Panama lags behind. The evidence supports the Customs Union as Central America's future integration path, highlighting the index's ability to capture the dynamic reality of economic integration. 相似文献
214.
215.
216.
Wissler Roselle L. Evans David L. Hart Allen J. Morry Marian M. Saks Michael J. 《Law and human behavior》1997,21(2):181-207
The present research explored factors thought to affect compensatory awards for non-economic ham (pain and suffering) in personal injury cases. Experiment 1 showed that the nature and severity of the plaintiffs injury had a strong effect on perceptions of the extent of harm suffered and on award amounts. The parties' relatively active or passive roles in causing the injury affected assessments of their degree of fault, but perceived fault had little influence on awards. Experiment 2 replicated with more varied cases the strong impact of injury severity on harm perception and on awards for pain and suffering. In both studies, the disability and the mental suffering associated with injuries were stronger predictors of awards than were pain and disfigurement. 相似文献
217.
This article will trace the history and effects of the PPI from the time of its original concept by the FDA in the early 1970's to its current status. It will also address the response to this FDA initiative by the industry, medical community and consumer groups. Initiatives in other countries and future issues will also be discussed. 相似文献
218.
The outcome of the 1992 U.S. presidential election has been explained largely as a function of perceptions of George Bush's economic performance. The economy submerged questions about Bill Clinton's character, awarding the advantage to the Democrat. In this article, we evaluate the effect of economic evaluations along with character attacks on candidate support in the 1992 presidential contest. Claims that the economy submerged character have been somewhat exaggerated. But while character remains an important issue in presidential evaluation, its role in judging candidates cannot be taken at face value. We show that both economic evaluations and character judgments are highly politicized. The findings indicate that those protesting Clinton's character turned almost exclusively to Bush. Those protesting Bush's economic record turned to both Perot and Clinton. Still, the economy did not trump character. The troubles of both major party candidates fueled a strong protest vote that contributed to Perot's strong showing. 相似文献
219.
Louthian RC Mills EM 《Annals of health law / Loyola University Chicago, School of Law, Institute for Health Law》1995,(4):1-33
The state of physician recruitment changed after the Internal Revenue Service required Hermann Hospital to publish its closing agreement with the IRS. The closing agreement released the long-awaited IRS "Hospital Physician Recruitment Guidelines." The IRS' recently proposed revenue ruling provides additional insight on acceptable physician recruitment practices as well. 相似文献
220.