全文获取类型
收费全文 | 4087篇 |
免费 | 147篇 |
专业分类
各国政治 | 135篇 |
工人农民 | 159篇 |
世界政治 | 252篇 |
外交国际关系 | 128篇 |
法律 | 2819篇 |
中国政治 | 39篇 |
政治理论 | 683篇 |
综合类 | 19篇 |
出版年
2021年 | 29篇 |
2020年 | 56篇 |
2019年 | 60篇 |
2018年 | 87篇 |
2017年 | 95篇 |
2016年 | 92篇 |
2015年 | 78篇 |
2014年 | 83篇 |
2013年 | 323篇 |
2012年 | 100篇 |
2011年 | 123篇 |
2010年 | 85篇 |
2009年 | 97篇 |
2008年 | 134篇 |
2007年 | 104篇 |
2006年 | 111篇 |
2005年 | 97篇 |
2004年 | 107篇 |
2003年 | 109篇 |
2002年 | 94篇 |
2001年 | 194篇 |
2000年 | 138篇 |
1999年 | 106篇 |
1998年 | 40篇 |
1997年 | 50篇 |
1996年 | 39篇 |
1995年 | 52篇 |
1994年 | 49篇 |
1993年 | 59篇 |
1992年 | 86篇 |
1991年 | 86篇 |
1990年 | 77篇 |
1989年 | 68篇 |
1988年 | 87篇 |
1987年 | 86篇 |
1986年 | 110篇 |
1985年 | 116篇 |
1984年 | 88篇 |
1983年 | 82篇 |
1982年 | 41篇 |
1981年 | 38篇 |
1979年 | 36篇 |
1978年 | 32篇 |
1975年 | 31篇 |
1974年 | 45篇 |
1973年 | 24篇 |
1972年 | 27篇 |
1971年 | 31篇 |
1970年 | 30篇 |
1968年 | 32篇 |
排序方式: 共有4234条查询结果,搜索用时 15 毫秒
841.
H Koyama M Iwasa Y Maeno T Tsuchimochi I Isobe S N Yoshimi M O Jun T Matsumoto T Horii M Nagao 《Forensic science international》2001,124(2-3):221-223
Allele and haplotype frequencies of seven Y-chromosome STR loci from samples of 108 unrelated Japanese males living in Aichi Prefecture. 相似文献
842.
Barriers Inhibiting Industry from Partnering with Universities: Evidence from the Advanced Technology Program 总被引:1,自引:0,他引:1
This paper describes a small, unique set of project data that was assembled as part of a larger study on universities as research partners. Herein, we summarize, to the extent possible, our interpretation of what the project data reveal about barriers, intellectual property (IP) concerns in particular, inhibiting industry from partnering with universities. 相似文献
843.
A. Ribotti R. Sorgente A. Hanggono G. M. R. Manzella N. Hendiarti L. Fusco T. R. Adi Y. S. Djajadihardja A. R. Farhan M. C. G. Frederik W. F. Ma’ruf B. Realino V. Rupolo P. Ruti M. Sadly F. Syamsudin B. A. Subki 《Asia Europe Journal》2008,6(2):277-292
In 2005 Indonesian and European institutes joined to start the first step for the implementation of an Ocean Operational System
in the Indonesian archipelago. The system will support the decision making process for the sustainable use of marine resources,
providing useful information and added value products as well as a service for an improved management of the sea with high
business impact to targeted groups as public authorities and commercial operators (coastal managers, fishermen, shipping companies).
In this paper the System is shortly described with its potential benefits and economic and social impacts.
相似文献
A. Ribotti (Corresponding author)Email: |
R. Sorgente |
A. Hanggono |
G. M. R. Manzella |
N. Hendiarti |
L. Fusco |
T. R. Adi |
Y. S. Djajadihardja |
A. R. Farhan |
M. C. G. Frederik |
W. F. Ma’ruf |
B. Realino |
V. Rupolo |
P. Ruti |
M. Sadly |
F. Syamsudin |
B. A. Subki |
844.
845.
846.
Mark N. Katz 《Society》2008,45(2):177-180
This article compares Moscow’s and Washington’s foreign policies toward the Middle East in 1982 and 2008. In 1982, Moscow
and Washington each had a distinct set of friends and foes. In 2008, Washington still has a distinct set of friends and foes,
but Moscow has relatively good relations with all governments and most major opposition movements in the region—the only exceptions
being Al Qaeda and its affiliates. It is argued that Putin’s policy toward the Middle East is not really aimed at displacing
the U.S. in the region, but protecting Russia and Russian interests from Al Qaeda and its allies. Indeed, a continued American
presence in the region serves to protect Russian interests in the region.
相似文献
Mark N. KatzEmail: |
847.
848.
849.
George N.Tzogopoulos 《北京周报(英文版)》2021,64(11):23-23
New avenues to be explored for Belt and Road cooperation At the beginning of 2021,the situation looks better in China and the rest of the world.China is striving to maintain its success in eliminating COVID-19 cases domestically and fostering immunity for its 1.4-billion population.The more the vaccination process gains ground,the more it is likely that lives will return to normalcy. 相似文献
850.