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   11553篇
  免费   318篇
各国政治   567篇
工人农民   534篇
世界政治   740篇
外交国际关系   448篇
法律   7281篇
中国政治   60篇
政治理论   2169篇
综合类   72篇
  2020年   129篇
  2019年   157篇
  2018年   218篇
  2017年   233篇
  2016年   257篇
  2015年   170篇
  2014年   230篇
  2013年   1164篇
  2012年   254篇
  2011年   282篇
  2010年   243篇
  2009年   262篇
  2008年   287篇
  2007年   301篇
  2006年   311篇
  2005年   231篇
  2004年   249篇
  2003年   275篇
  2002年   214篇
  2001年   464篇
  2000年   413篇
  1999年   354篇
  1998年   159篇
  1997年   137篇
  1996年   123篇
  1995年   110篇
  1994年   137篇
  1993年   125篇
  1992年   232篇
  1991年   253篇
  1990年   272篇
  1989年   252篇
  1988年   267篇
  1987年   281篇
  1986年   248篇
  1985年   244篇
  1984年   202篇
  1983年   182篇
  1982年   128篇
  1981年   133篇
  1980年   104篇
  1979年   175篇
  1978年   118篇
  1977年   91篇
  1976年   81篇
  1975年   104篇
  1974年   121篇
  1973年   108篇
  1972年   78篇
  1971年   77篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
An examination of a case in which adjunctive use of scanning electron microscopy (SEM) demonstrated the presence of unusual three-dimensional characteristics in a bite mark. Despite the fact that many bite marks do not show "depth," demonstration of the presence of this third dimension can produce significant data for evidentiary purposes. In some instances, these data may transform what seem to be class characteristics of a bite mark into individual characteristics and thus impart much more uniqueness to the evidence. Because of the high level of resolution and magnification of SEM, some three-dimensional characteristics not visible to the eye can be shown quite clearly by its use. Emphasis will be given to the value of SEM as a tool of the forensic odontologist in bite mark analysis.  相似文献   
142.
143.
Book reviews     
Handbook of Legal Information Retrieval Edited by J Bing, Norwegian Research Centre for Computers and Law, Oslo, in co‐operation with T Fjeldvig, T Harvold and R Svoboda North‐Holland 1984, US $96.25

Information Technology: The Challenge to Copyright. James Lahore, Gerald Dworkin and Yvonne Smyth Sweet & Maxwell and The Centre for Commercial Law Studies 1984, £12.00

Data Processing and the Law Edited by Colin Campbell Sweet and Maxwell 1984, £20.00

Le droit des Contrats Informatiques — Principes — Applications Centre de Recherches informatique et droit des Facultes Universitaires de Namur Maison Ferdinand Larder (Brussels), 1983, 45 FB

Computer Insecurity Adrian R.D. Norman Chapman and Hall 1983, £14.95

The Data Protection Act Richard Sizer and Philip Newman Gower Publishing, 1984, £16.95

The Data Protection Act 1984 Professor Bryan Niblett Oyez Longman Publishing, 1984, £18.00

The Data Protection Act 1984 — A Guide to the New Legislation J. A. L. Sterling CCH Editions, 1984, £15.00

Privacy and Data Protection — An International Bibliography Professor David H. Flaherty Mansell Publishing, 1984, £23.50

Computer Contracts R Morgan & G Stedman Oyez Longman Publishing 1984, 2nd Edition, £27.50

Computer Contracts Handbook Michele Rennie Sweet & Maxwell 1984, £15.00

Computer Contracts — An International Guide to Agreements and Software Protection Hilary Pearson Financial training 1984, £14.95  相似文献   

144.
145.
Much attention has been given of late to the erosion of the "employment-at-will" doctrine. Exceptions to this doctrine began to emerge when courts held that at-will employees could sue if their termination violated public policy. The at-will doctrine was further eroded by court rulings that a contract requiring good cause in order to terminate could be inferred from employee handbooks, company personnel policies, and circumstances of employment. As the initial flood of wrongful termination lawsuits now reaches the appellate level, some guidance on the standards employers must observe can be drawn from court decisions. The authors examine these decisions as well as the legislative reform being proposed in response to them.  相似文献   
146.
Physicians who defraud and abuse medical benefit programs provide a unique group of lawbreakers for scientific study. They could be considered to epitomize white collar criminals given their exceedingly high socioeconomic status and power as a professional group. Using official reports and documents, as well as interviews with enforcement and program personnel at both state and federal levels, this study examines the problem of physician fraud and abuse in Medicare and Medicaid. Major areas relevant to understanding this phenomenon and its control are presented and policy implications of present knowledge in the area are discussed.  相似文献   
147.
148.
149.
150.
Studies were carried out systematically in both corpses and the hands of corpses in order to find out when " washerwoman 's skin" begins. The temperatures ranged between 10 degrees and 18 degrees C and the time of the experiments did not exceed 300 min. The initial formation of washerwoman 's skin could be observed after 20-30 min at the fingertips and after 50-60 min in the entire finger. The longest intervals observed were 100 or 150 min, respectively. These long intervals were interpreted as being exceptions from the norm, probably due to either extraordinarily heavy strips of fat on the fingers or abnormally hard skin on the hands. The course of washerwoman 's skin obviously depends on the water temperature, and afterwards it disappears rather slowly--even after a short immersion--in the open air. We will carry out additional experiments in the future.  相似文献   
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