全文获取类型
收费全文 | 15881篇 |
免费 | 1343篇 |
专业分类
各国政治 | 557篇 |
工人农民 | 584篇 |
世界政治 | 1133篇 |
外交国际关系 | 462篇 |
法律 | 11681篇 |
中国共产党 | 2篇 |
中国政治 | 104篇 |
政治理论 | 2605篇 |
综合类 | 96篇 |
出版年
2020年 | 379篇 |
2019年 | 408篇 |
2018年 | 474篇 |
2017年 | 527篇 |
2016年 | 562篇 |
2015年 | 488篇 |
2014年 | 496篇 |
2013年 | 1567篇 |
2012年 | 376篇 |
2011年 | 482篇 |
2010年 | 603篇 |
2009年 | 595篇 |
2008年 | 383篇 |
2007年 | 355篇 |
2006年 | 466篇 |
2005年 | 313篇 |
2004年 | 320篇 |
2003年 | 324篇 |
2002年 | 285篇 |
2001年 | 606篇 |
2000年 | 530篇 |
1999年 | 426篇 |
1998年 | 200篇 |
1997年 | 185篇 |
1996年 | 154篇 |
1995年 | 179篇 |
1994年 | 199篇 |
1993年 | 162篇 |
1992年 | 312篇 |
1991年 | 323篇 |
1990年 | 332篇 |
1989年 | 338篇 |
1988年 | 331篇 |
1987年 | 296篇 |
1986年 | 294篇 |
1985年 | 315篇 |
1984年 | 287篇 |
1983年 | 251篇 |
1982年 | 196篇 |
1981年 | 172篇 |
1980年 | 164篇 |
1979年 | 195篇 |
1978年 | 126篇 |
1977年 | 100篇 |
1976年 | 97篇 |
1975年 | 95篇 |
1974年 | 116篇 |
1973年 | 92篇 |
1972年 | 76篇 |
1971年 | 75篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
Ellen K. Marshall Ph.D. 《Journal of Police and Criminal Psychology》2006,21(1):62-71
The present study measured the existence of traumatic stress symptomatology as reported by certified law enforcement officers
within the State of Delaware. A questionnaire was devised which documented age, sex, race, education, years of service, marital
status, children, rank, position, and shift work. The questionnaire was divided into parts which assessed the exposure and
the frequency of specific traumatic incidents experienced in the line of duty, and the frequency of experienced traumatic
symptomatology criteria: re-experiencing, numbing, and arousal. 相似文献
12.
13.
14.
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
15.
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
16.
17.
The individuality of fibres used to provide forensic evidence--not all blue polyesters are the same.
Fibres used in forensic casework suffer from a disadvantage common to other forms of trace evidence--it is not possible to state with absolute certainty that they originate from a specific source. Target fibre studies, population studies and research on 'blocks of colour' have effectively demonstrated the polymorphism of textile fibres (particularly man-made ones) and have shown that when a fibre is believed to have a specific putative source, the chance that it has originated from a different source purely by coincidence is extremely remote. A study by Houck MM (Houck MM, Inter-comparison of unrelated fibre evidence. Forensic Science International 2003; 135: 146-149) has shown that no coincidental matching fibres were recovered from items of clothing examined in 20 unrelated crimes. The study involved over two million comparisons. This work goes a step further, and using the example of blue polyester fibres shows that even within a very narrow segment of the whole general fibre population, many examples of a specific colour/type of man-made fibre taken from random sources can be compared and the chance of any two being the same is very low. These studies should help to show the specificity and value of transferred fibres in providing forensic evidence. 相似文献
18.
19.
Steven D. Roper 《欧亚研究》2007,59(1):97-109
This article explores the influence that state finance has had on the Romanian party system by examining the entry and exit of parties throughout the period of 1990 – 2004 and focusing on the number of parties that gained representation in the parliament as well as the party incumbency rate. I find that state finance has had a limited influence on the party system as a whole but has been influential for specific parties. I argue that the influence of state finance partly depends on when the system was introduced. In developing party systems, the influence of state finance on individual parties is more differential. 相似文献
20.
Gerald D. Feldman 《澳大利亚政治与历史杂志》2007,53(1):57-67
The economics of the Holocaust is a many‐facetted subject that is an integral part of the Holocaust's history. This paper describes some of the results of the new research since 1990 and discusses the economic rationalities employed by the perpetrators in despoiling the Jews. Economic considerations accompanied the timing and pace of the expropriation of Jewish assets and their “Aryanization.” The new research also shows that there was widespread collaboration in the expropriation of the Jews by private interests both inside Germany and in German‐controlled Europe and that networks of bureaucrats and private interests joined to achieve Nazi goals. The combination of expropriation and mass murder was one of the aspects of the Holocaust that made it unique. 相似文献