全文获取类型
收费全文 | 21997篇 |
免费 | 1316篇 |
专业分类
各国政治 | 890篇 |
工人农民 | 1005篇 |
世界政治 | 1553篇 |
外交国际关系 | 725篇 |
法律 | 14939篇 |
中国共产党 | 2篇 |
中国政治 | 143篇 |
政治理论 | 3952篇 |
综合类 | 104篇 |
出版年
2021年 | 124篇 |
2020年 | 477篇 |
2019年 | 529篇 |
2018年 | 676篇 |
2017年 | 674篇 |
2016年 | 749篇 |
2015年 | 557篇 |
2014年 | 627篇 |
2013年 | 2292篇 |
2012年 | 589篇 |
2011年 | 631篇 |
2010年 | 633篇 |
2009年 | 671篇 |
2008年 | 643篇 |
2007年 | 629篇 |
2006年 | 630篇 |
2005年 | 538篇 |
2004年 | 561篇 |
2003年 | 455篇 |
2002年 | 488篇 |
2001年 | 902篇 |
2000年 | 798篇 |
1999年 | 618篇 |
1998年 | 307篇 |
1997年 | 241篇 |
1996年 | 233篇 |
1995年 | 238篇 |
1994年 | 214篇 |
1993年 | 208篇 |
1992年 | 395篇 |
1991年 | 418篇 |
1990年 | 394篇 |
1989年 | 379篇 |
1988年 | 391篇 |
1987年 | 367篇 |
1986年 | 395篇 |
1985年 | 394篇 |
1984年 | 324篇 |
1983年 | 301篇 |
1982年 | 226篇 |
1981年 | 219篇 |
1980年 | 172篇 |
1979年 | 279篇 |
1978年 | 156篇 |
1977年 | 116篇 |
1975年 | 128篇 |
1974年 | 166篇 |
1973年 | 126篇 |
1972年 | 110篇 |
1971年 | 97篇 |
排序方式: 共有10000条查询结果,搜索用时 125 毫秒
131.
Distinctive blunt force injuries caused by a crescent wrench. 总被引:1,自引:0,他引:1
132.
133.
Carol U. Lindquist Lillian E. Sass Denise Bottomley Suzanne M. Katin Jennifer D. Maddox Rose M. Ordonez Craig N. Teofilo 《Journal of family violence》1997,12(1):75-83
Current research suggests that a husband's substance abuse is correlated with severity of physical abuse and the woman's decision to leave a violent situation. Often, only the battered woman's report of abuse is available. This study compares women's reports of their partners' substance use/abuse with their partners' report using a brief measure of polydrug and alcohol abuse, the Substance Abuse Subtle Screening Inventory (SASSI) and the Conflict Tactics Scale (CTS). Data were analyzed for 25 recovery couples and 25 nonrecovery couples. The correlations for all 50 couples between the male's reported use and the female's report of her partner's use on the SASSI and the CTS were significant on all but one of the CTS scales. They ranged on SASSI from .73 to .33 and from .31 to .06 on the CTS. This suggests that the SASSI and possibly the CTS could be used as valuable tools for assessing women's reports of their partner's substance use/abuse. 相似文献
134.
The psychological assessment battery is an integral part of the selection process used to select patrol officer applicants.
Unlike all other procedures used in the selection process, the psychological assessment has not been adequately validated.
The purpose of this study was an attempt to provide validation data for a psychological assessment battery. The battery consisted
of the Nelson-Denny, Shipley-Hartford, MMPI, and the Motivational Analysis Test (MAT). Performance measures included various
measures of training academy performance and field training performance. A stepwise regression and MANOVA/Discriminant Analysis
indicated that the psychological tests did predict performance, although an exact predictive equation could not be developed
due to the high intercorrelations between predictor variables.
This research was sponsored in part by a grant from the School of Applied Arts and Technology, Southwest Texas State University. 相似文献
135.
Netherlands International Law Review - 相似文献
136.
Some features of early child care are more prominent in Norway than in other countries, such as emphasis on the outdoor environment. Of general relevance and interest is the form of day care provided by forest day-care centers. Three ideas form the development of these centers placed in wild areas. First, throughout history, Norwegians have had a close attachment to nature and some parents want to provide their children with outdoor experiences at an early age. Second, urging children to play outdoors characterizes the image many parents have of a happy, healthy childhood. Third, provision of day care for children has always been restricted in western countries, forcing parents to invent types of service that can become part of an ecological system that promotes healthy development.The forest day-care centers developed recently represent a supplement to the wide typology of child care in the 21st century. The article outlines the connections between these ideas in general European and western history and Norwegian history and presents debate and decisions about a question dating from the last half of the 1980s. It concludes that the forest day-care centers are perhaps only a modern form of the original kindergarten concept, which started in Europe and America as gardens for children not gardens of children. 相似文献
137.
138.
Conclusion The Regulations appear to have reinforced the protection available to software producers under United Kingdom law. The provisions of the Software Directive and the Regulations are complex and not without significant inconsistencies which are likely to prove to be a source of litigation. The drafters of the Regulations chose, unlike many of its European partners, not to adopt the wording of the Software Directive but to write their own interpretation, adding an element of uncertainty to the law in this area, which is perhaps inevitable bearing in mind the linguistic problems of translating and interpreting any directive coupled with the ambiguity and omission of definitions of several key terms. More important, however, than any academic argument will be the practical impact of the new law and its effectiveness in achieving its aim. 相似文献
139.
140.
Deoxyribonucleic acid (DNA) typing of ribosomal ribonucleic acid (rRNA) genes was performed with a polymerase chain reaction (PCR) assay for species identification. A variable region of the 28S ribosomal RNA gene was amplified with primers complementary to flanking sequences phylogenetically well conserved. The products of twelve animal DNAs (human, Japanese monkey, dog, cattle, pig, cat, rabbit, mouse, rat, chicken, frog, and fish) were separated by polyacrylamide gel electrophoresis, each revealing a few bands ranging from 150 to 100 base pairs. The band patterns obtained from each DNA sample differed in number and size, which indicates the applicability of the method to species identification. Samples containing either as little as 1 pg of DNA or degraded DNA of 0.2 to 0.5 kb in length were able to give detectable bands. Postmortem human tissue DNAs were tested as an example. They showed a pattern identical to the human control one, which was distinct from those of the other animals examined. 相似文献