全文获取类型
收费全文 | 1349篇 |
免费 | 62篇 |
专业分类
各国政治 | 134篇 |
工人农民 | 59篇 |
世界政治 | 131篇 |
外交国际关系 | 60篇 |
法律 | 606篇 |
中国共产党 | 1篇 |
中国政治 | 22篇 |
政治理论 | 390篇 |
综合类 | 8篇 |
出版年
2023年 | 6篇 |
2022年 | 6篇 |
2021年 | 10篇 |
2020年 | 22篇 |
2019年 | 33篇 |
2018年 | 31篇 |
2017年 | 40篇 |
2016年 | 44篇 |
2015年 | 36篇 |
2014年 | 45篇 |
2013年 | 239篇 |
2012年 | 34篇 |
2011年 | 41篇 |
2010年 | 35篇 |
2009年 | 22篇 |
2008年 | 40篇 |
2007年 | 35篇 |
2006年 | 55篇 |
2005年 | 50篇 |
2004年 | 43篇 |
2003年 | 47篇 |
2002年 | 49篇 |
2001年 | 25篇 |
2000年 | 26篇 |
1999年 | 24篇 |
1998年 | 27篇 |
1997年 | 29篇 |
1996年 | 20篇 |
1995年 | 14篇 |
1994年 | 21篇 |
1993年 | 26篇 |
1992年 | 9篇 |
1991年 | 13篇 |
1990年 | 11篇 |
1989年 | 16篇 |
1988年 | 22篇 |
1987年 | 10篇 |
1986年 | 15篇 |
1985年 | 10篇 |
1984年 | 17篇 |
1983年 | 7篇 |
1982年 | 11篇 |
1981年 | 9篇 |
1979年 | 18篇 |
1978年 | 9篇 |
1976年 | 8篇 |
1975年 | 6篇 |
1971年 | 5篇 |
1968年 | 5篇 |
1967年 | 6篇 |
排序方式: 共有1411条查询结果,搜索用时 15 毫秒
941.
942.
A statistical evaluation of the relationship between elevated concentrations of lead and cadmium in human urine is presented. The importance of the 24-hour continuously collected urine sample is confirmed. 相似文献
943.
M J Lewis 《Journal - Forensic Science Society》1986,26(2):95-113
944.
T J Lewis 《American journal of law & medicine》1979,5(3):215-230
Certificate-of-need statutes give designated state agencies veto power over investment in health care facilities. Some states have sought to temper the arbitrary character of this power by expanding the opportunities for community input into the certificate-of-need process. Massachusetts, for example, has enacted a statute that allows groups of ten taxpayers to petition for a public hearing on any certificate-of-need application. Some observers question whether the benefits of taxpayer-group participation are substantial enough to compensate for the delays and abuses that the statute allegedly invites. To help resolve this question, this Comment examines historical data on Massachusetts taxpayer groups and on their activities and assesses the significance of their composition and tactics to the certificate-of-need process. Although flaws exist in the Massachusetts ten-taxpayer mechanism, in this writer's view it has succeeded partially in making the certificate-of-need process responsive to community opinion. Many groups lack the skills and qualities needed to make constructive use of the ten-taxpayer mechanism. Nevertheless, it serves a valuable purpose by creating a public forum for and by encouraging public participation in the certificate-of-need process, especially by those who might otherwise try to circumvent that process through use of special legislation, of private pressure, or of other similar means. 相似文献
945.
Territory, national versus regional, has been at the basis ofclaims to power in most federations, and Canada is no exception.But regionalism has had to contend with another perspectiveon political power in Canada: economic rationalism or entrepreneurism,which views its own conduct and that of government as the maximizationof economic profit. As advocated by the federal government,most particularly under Trudeau, economic rationalism conceivedof a division of powers that is efficient, least costly, flexible,hierarchical, systematic, and rational. This pursuit of omnicompetenceand unrestricted jurisdiction has resulted in unilateral federalisminitiated by Ottawa and rejoindered by provinces. It constitutesa major challenge to cooperative relations and an abdicationby the national government of its brokerage role between theinterests of the extensive and intensive communities in Canada. 相似文献
946.
947.
948.
949.
950.