全文获取类型
收费全文 | 16979篇 |
免费 | 495篇 |
专业分类
各国政治 | 696篇 |
工人农民 | 662篇 |
世界政治 | 1410篇 |
外交国际关系 | 578篇 |
法律 | 10219篇 |
中国共产党 | 2篇 |
中国政治 | 75篇 |
政治理论 | 3659篇 |
综合类 | 173篇 |
出版年
2020年 | 208篇 |
2019年 | 247篇 |
2018年 | 323篇 |
2017年 | 385篇 |
2016年 | 411篇 |
2015年 | 285篇 |
2014年 | 330篇 |
2013年 | 1652篇 |
2012年 | 406篇 |
2011年 | 427篇 |
2010年 | 340篇 |
2009年 | 380篇 |
2008年 | 438篇 |
2007年 | 458篇 |
2006年 | 438篇 |
2005年 | 388篇 |
2004年 | 394篇 |
2003年 | 413篇 |
2002年 | 375篇 |
2001年 | 676篇 |
2000年 | 613篇 |
1999年 | 505篇 |
1998年 | 284篇 |
1997年 | 241篇 |
1996年 | 202篇 |
1995年 | 204篇 |
1994年 | 243篇 |
1993年 | 217篇 |
1992年 | 338篇 |
1991年 | 367篇 |
1990年 | 326篇 |
1989年 | 344篇 |
1988年 | 316篇 |
1987年 | 334篇 |
1986年 | 336篇 |
1985年 | 330篇 |
1984年 | 285篇 |
1983年 | 316篇 |
1982年 | 254篇 |
1981年 | 237篇 |
1980年 | 178篇 |
1979年 | 246篇 |
1978年 | 165篇 |
1977年 | 144篇 |
1976年 | 130篇 |
1975年 | 120篇 |
1974年 | 135篇 |
1973年 | 117篇 |
1972年 | 112篇 |
1971年 | 94篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
251.
The case of the death by arsenic poisoning of a 62-year-old white man is presented. One year prior to death, he developed intermittent bouts of severe gastroenteritis with vomiting and diarrhea, hyperpigmentation and keratosis of the skin, neutropenia, and Guillain-Barré-like neuropathy for which he was hospitalized several times. Urine test results 6 months prior to death indicating 36 mg/L arsenic were believed to be in error. At the patient's last admission, he appeared in the emergency room with severe gastroenteritis, hypotension, and dehydration. He died 3 days later. Antemortem as well as autopsy specimens revealed elevated arsenic concentrations. Arsenic micrograms/g analysis by neutron activation of hair pulled from the man's head revealed by centimeter segmental analysis proximal to distal: 226, 104, 28, 56, 41, 40, and 74. The wife of the decedent was charged with murder by arsenic poisoning of this, her fifth, husband. The defense alleged that the decedent had committed suicide. The judge awarded a directed verdict of "not guilty." Particulars of the medical, toxicological, and investigative findings are presented. 相似文献
252.
253.
In the summer of 1984, police in Pinellas County, Florida, confiscated six identically colored imported Asian skulls (in a shipping case) from a private citizen. In May 1988, in nearby Hillsborough County, police confiscated a very similar skull from another private citizen, who allegedly had found it in an abandoned house. Aside from slight color differences between the six found in Pinellas County and the one found in Hillsborough County, the skulls are virtually identical in their osteological characteristics and condition and in the vital statistics derived from each. Each skull is as clean and dry as those typically sold by commercial scientific supply outlets in the United States. Each is edentulous (primarily premortem), between approximately 20 and 60 years of age at death, and morphologically Asian. Five of the seven are morphologically male, one is morphologically female, and one is a mosaic with respect to gender-related features. Police, medical examiners, coroners, and forensic anthropologists should be aware of such "souvenir" specimens, in the event that they encounter similar skulls. Discriminant function analyses for race and sex yield considerably conflicting results, which underscores the need for using extreme caution when interpreting forensic science estimates based on such techniques. 相似文献
254.
255.
256.
Pescador JJ 《Estudios demográficos y urbanos》1990,5(3):729-54, 827-8
"The purpose of this article is to identify and evaluate the impacts of growing female in-migration to Mexico City at the close of the eighteenth century, analyzing for the case of the parish of Santa Catarina the proportion of men/women in the certificates of baptisms and burials...." Consideration is given to family formation, government policy, urbanization, and employment opportunities and their impact on family life. (SUMMARY IN ENG) 相似文献
257.
258.
Arye L. Hillman 《Public Choice》1990,67(2):101-110
The political feasibility of protectionist policies that regulate international industry derives from the absence of overt collusion among domestic import-competing producers. The regulation of international industry cannot be explicit since governments would thereby be perceived to be approving (or instigating) international collusion. Hence, voluntary export restraints have been popularly presented with a focus on the difficulties confronted by domestic import-competing producers and a de-emphasis on the mutual gains to domestic and foreign producers from monitoring by a foreign government of a restrictive export cartel arrangement. Similarly, trigger-price mechanisms have popularly been explained in terms of the need for anti-dumping measures to preserve fair competition. Likewise, the involuntary export tax derived in the first instance from an administratively validated (but, as demonstrated by Kalt's econometric analysis, contentious) complaint of unfair foreign competition. Voluntary export restraints, trigger-price mechanisms, and involuntary export taxes are however protectionist devices, the beneficiaries of which can transcend national jurisdictions, and which have in common the characteristic that the gains to domestic industry interests derive from the regulation of foreign competitors.A previous version of this paper was presented at a conference on Economics and Power organized by the FWS Institute of Zug and held at Interlaken, Switzerland in July 1988. 相似文献
259.
260.
The Clinton health-care plan will soon be unveiled. Here is an inside look at what it contains so far. 相似文献