全文获取类型
收费全文 | 16270篇 |
免费 | 521篇 |
国内免费 | 5篇 |
专业分类
各国政治 | 653篇 |
工人农民 | 719篇 |
世界政治 | 1067篇 |
外交国际关系 | 534篇 |
法律 | 10526篇 |
中国共产党 | 6篇 |
中国政治 | 153篇 |
政治理论 | 2968篇 |
综合类 | 170篇 |
出版年
2020年 | 220篇 |
2019年 | 268篇 |
2018年 | 331篇 |
2017年 | 386篇 |
2016年 | 392篇 |
2015年 | 291篇 |
2014年 | 299篇 |
2013年 | 1464篇 |
2012年 | 444篇 |
2011年 | 474篇 |
2010年 | 390篇 |
2009年 | 408篇 |
2008年 | 493篇 |
2007年 | 533篇 |
2006年 | 513篇 |
2005年 | 463篇 |
2004年 | 453篇 |
2003年 | 484篇 |
2002年 | 417篇 |
2001年 | 663篇 |
2000年 | 538篇 |
1999年 | 475篇 |
1998年 | 242篇 |
1997年 | 165篇 |
1996年 | 200篇 |
1995年 | 170篇 |
1994年 | 196篇 |
1993年 | 194篇 |
1992年 | 321篇 |
1991年 | 353篇 |
1990年 | 338篇 |
1989年 | 281篇 |
1988年 | 319篇 |
1987年 | 270篇 |
1986年 | 317篇 |
1985年 | 280篇 |
1984年 | 229篇 |
1983年 | 218篇 |
1982年 | 175篇 |
1981年 | 190篇 |
1980年 | 127篇 |
1979年 | 171篇 |
1978年 | 122篇 |
1977年 | 107篇 |
1976年 | 96篇 |
1975年 | 123篇 |
1974年 | 132篇 |
1973年 | 103篇 |
1972年 | 100篇 |
1969年 | 98篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
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
13.
14.
Netherlands International Law Review - 相似文献
15.
16.
Margaret A. Zahn 《Family Court Review》2007,45(3):456-465
This article summarizes some of the literature reviewed by the Girls Study Group, which is a federally funded project aimed at assessing the causes of girls’ delinquency as well as evaluating programs to address it. The literature reveals that a number of factors such as family dysfunction, involvement with antisocial peers, and living in disadvantaged neighborhoods are correlated with delinquency for both boys and girls. Some factors, however, are gender sensitive, meaning that either girls are more exposed to a given risk factor than boys or react somewhat differently to a given risk factor. Girls have higher rates of exposure to sexual assault, which is associated with delinquency and, although more research is needed, they are more affected by the impacts of early puberty, when it is coupled with harsh parenting and disadvantaged neighborhoods. This article discusses some implications of the research on correlates of delinquency for programming for girls and makes recommendations for program selection. 相似文献
17.
Richard A. Warshak 《Family Court Review》2007,45(4):600-619
The American Law Institute proposes that in contested physical custody cases the court should allocate to each parent a proportion of the child's time that approximates the proportion of time each has spent performing caretaking functions in the past. Examined through the lens of child development research, the approximation rule is unlikely to improve on the best interests standard. It is difficult to apply; is perceived as gender‐biased; creates a new focus for disputing parents; renders a poor estimate of parents’ contributions to their child's best interests; overlooks parents’ intangible, yet significant, contributions to their child's well‐being; and miscalculates the essence of how a child experiences the family. A preferable alternative is a better defined, contemporary best interests standard that accommodates new knowledge and reforms that encourage nonadversarial, individualized resolutions of custody disputes. 相似文献
18.
19.
Having found that a deep hyperlink on Davis' website to livestreaming of a motorcycle race owned by Live Nation constitutescopying, the court granted Live Nation's Motion for summaryjudgment in its copyright infringement claim and enjoined Davisfrom maintaining the link. 相似文献
20.
V.K. Sharma R.K. Jadhav G.J. Rao A.K. Saraf Heeresh Chandra 《Forensic Science International Supplement Series》1991,50(2)
A method has been developed on reverse phase high performance liquid chromatography for simultaneous determination of methyl, ethyl and isopropyl alcohols under refractive index detection using pure water as the mobile phase. A good separation has been achieved between these alcohols. Detector response was linear with a detection limit of 5 mg/100 ml. Recovery studies were performed by adding known amounts of methyl and ethyl alcohols to blood, lung and liver within the range 80–90%. The reproducibility of the results was always >90%. The quantitative distribution of methyl alcohol in postmortem body tissues and fluids has been reported in three cases of poisoning. 相似文献