全文获取类型
收费全文 | 9517篇 |
免费 | 287篇 |
专业分类
各国政治 | 496篇 |
工人农民 | 438篇 |
世界政治 | 566篇 |
外交国际关系 | 289篇 |
法律 | 5962篇 |
中国共产党 | 3篇 |
中国政治 | 67篇 |
政治理论 | 1899篇 |
综合类 | 84篇 |
出版年
2020年 | 123篇 |
2019年 | 157篇 |
2018年 | 226篇 |
2017年 | 249篇 |
2016年 | 242篇 |
2015年 | 175篇 |
2014年 | 174篇 |
2013年 | 1083篇 |
2012年 | 255篇 |
2011年 | 250篇 |
2010年 | 206篇 |
2009年 | 234篇 |
2008年 | 282篇 |
2007年 | 239篇 |
2006年 | 281篇 |
2005年 | 242篇 |
2004年 | 243篇 |
2003年 | 218篇 |
2002年 | 238篇 |
2001年 | 285篇 |
2000年 | 281篇 |
1999年 | 203篇 |
1998年 | 135篇 |
1997年 | 136篇 |
1996年 | 117篇 |
1995年 | 101篇 |
1994年 | 108篇 |
1993年 | 118篇 |
1992年 | 191篇 |
1991年 | 208篇 |
1990年 | 195篇 |
1989年 | 189篇 |
1988年 | 166篇 |
1987年 | 185篇 |
1986年 | 180篇 |
1985年 | 170篇 |
1984年 | 161篇 |
1983年 | 175篇 |
1982年 | 100篇 |
1981年 | 96篇 |
1980年 | 86篇 |
1979年 | 110篇 |
1978年 | 80篇 |
1977年 | 77篇 |
1976年 | 61篇 |
1975年 | 62篇 |
1974年 | 64篇 |
1973年 | 77篇 |
1972年 | 65篇 |
1968年 | 54篇 |
排序方式: 共有9804条查询结果,搜索用时 15 毫秒
121.
The authors reviewed at autopsy the causes of death of 274 patients with evidence of intravenous drug abuse who had been admitted to a large public hospital. There were 127 who died from diseases unrelated to intravenous drug abuse, and in 41% of these, chronic alcoholism was implicated. Deaths from overdose syndromes and drug-related organ pathology comprised only 11% of all cases. The mean age at death was 39 years. There was a male/female ratio of 3.6:1. Half of all patients died from infection--72 from acquired immunodeficiency syndrome (AIDS) alone. These findings indicate that persons hospitalized with a history of intravenous drug abuse usually die from causes other than overdose and that AIDS and chronic alcoholism are significant problems. Emphasis should be placed upon detecting "hidden" intravenous drug deaths to provide more accurate statistical information. 相似文献
122.
123.
124.
125.
Over the past decade, there has been an explosion of litigation addressing an employer's right to unilaterally amend or terminate medical benefits provided to retirees. The sheer volume of these cases and the variety of facts and legal theories have combined to obscure the patterns and trends that actually are emerging from this litigation. This article will describe the context of the struggle over retiree benefits and discuss those leading decisions in which the federal courts of appeals have established their rules for deciding retiree benefits cases. 相似文献
126.
127.
128.
Robert E. Goodin 《Policy Sciences》1993,26(2):63-78
The welfare state is often accused of being counterproductive: as the scope of public responsibility expands, private morality (especially altruism and benevolence) atrophies. This essay surveys psychological findings for evidence, which turns out to be broadly consistent with either of two models of moral development, each bearing distinct policy implications. The model of morally keeping in practice that is implicit in the term moral atrophy suggests the need for frequent opportunities to exercise moral skills, which would seem inconsistent with the welfare state. Alternatively, the model of moral character-building favoured by both philosophers and ordinary discourse would require only occasional reminders of one's moral principles. On this model, benevolence could usefully supplement the welfare state. 相似文献
129.
130.