全文获取类型
收费全文 | 10155篇 |
免费 | 250篇 |
专业分类
各国政治 | 328篇 |
工人农民 | 326篇 |
世界政治 | 620篇 |
外交国际关系 | 304篇 |
法律 | 7140篇 |
中国政治 | 63篇 |
政治理论 | 1551篇 |
综合类 | 73篇 |
出版年
2020年 | 122篇 |
2019年 | 145篇 |
2018年 | 183篇 |
2017年 | 196篇 |
2016年 | 218篇 |
2015年 | 136篇 |
2014年 | 202篇 |
2013年 | 877篇 |
2012年 | 246篇 |
2011年 | 303篇 |
2010年 | 224篇 |
2009年 | 212篇 |
2008年 | 277篇 |
2007年 | 321篇 |
2006年 | 307篇 |
2005年 | 248篇 |
2004年 | 288篇 |
2003年 | 296篇 |
2002年 | 253篇 |
2001年 | 439篇 |
2000年 | 396篇 |
1999年 | 305篇 |
1998年 | 104篇 |
1997年 | 84篇 |
1996年 | 89篇 |
1995年 | 84篇 |
1994年 | 90篇 |
1993年 | 88篇 |
1992年 | 194篇 |
1991年 | 228篇 |
1990年 | 210篇 |
1989年 | 232篇 |
1988年 | 221篇 |
1987年 | 221篇 |
1986年 | 198篇 |
1985年 | 218篇 |
1984年 | 180篇 |
1983年 | 191篇 |
1982年 | 114篇 |
1981年 | 112篇 |
1980年 | 82篇 |
1979年 | 127篇 |
1978年 | 101篇 |
1977年 | 85篇 |
1976年 | 82篇 |
1974年 | 89篇 |
1973年 | 91篇 |
1972年 | 72篇 |
1971年 | 80篇 |
1970年 | 78篇 |
排序方式: 共有10000条查询结果,搜索用时 6 毫秒
1.
2.
3.
John P. Crank 《Crime, Law and Social Change》2003,39(1):39-67
This concept paper presents a theory of environmental scarcity developed byHomer-Dixon. Homer-Dixon developed a model to describe the consequences of scarcity for sub-national violence in third world countries. This paper hasfour interrelated purposes. First, it presents the model of scarcity developedby Thomas Homer-Dixon in 1999. Second, it assesses the way in which the scarcity model contextualizes criminal justice and criminology research, andby extension, how research in crime and justice processes can broaden the scarcity model. Third, it applies elements of the model to the United States,a goal that represents a generalization of the model from third-world to first-world settings. Fourth, it presents a particular case, the migrationof African-Americans from the rural South to urban centers in the 1950s and1960s and consequent inner-city violence in the 1960s, that displays manyelements of the environmental scarcity model. 相似文献
4.
5.
6.
Acute myoglobinuria as a fatal complication of heroin addiction 总被引:3,自引:0,他引:3
Y F Chan P K Wong T C Chow 《The American journal of forensic medicine and pathology》1990,11(2):160-164
A fatal case of myoglobinuria complicating heroin addiction is described. Clinically the patient had no overt symptoms of rhabdomyolysis. Pathologists should be alerted to this rare complication in heroin addicts who die of no apparent cause. The antimyoglobin immunoperoxidase technique is useful in confirming the diagnosis. 相似文献
7.
Stab wounds were made in parenchymatous organs (e.g. liver, spleen, kidneys, lungs) using a variety of instruments. The shape of the resulting canal was investigated by X-ray analysis after introduction of an X-ray contrast medium. The best contrast was obtained using a contrast medium containing barium. The shape of the canal gave a direct representation of the outline of the instrument used. The width of the canal was however, always several millimeters smaller than the corresponding blade of the instrument. The position of the blade back in single-edged blades could be demonstrated with stronger contrast. 相似文献
8.
The conventional wisdom in criminology is that adult onset of offending is a rare event. Closer examination of the extant literature that use official records, however, reveals that an average of 50 percent of adult offenders initiate offending at age eighteen or older. Although criminological research has investigated late onset offending in adolescence, there is little research on adult onset offending and the correlates of adult offending. Using police contact and interview data from the 1942 and 1949 birth cohort data from Racine, WI, this study investigated the correlates of crime for adult onset and persistent offenders. The results show that employment is the only correlate to affect the probability of adult offending differently for previously delinquent and nondelinquent offenders. This article concludes by highlighting the neglect of research on adult offenders, specifically the large percentage of adult onset offenders, and calling for more research on this topic. 相似文献
9.
10.