全文获取类型
收费全文 | 1561篇 |
免费 | 73篇 |
出版年
2023年 | 7篇 |
2022年 | 7篇 |
2020年 | 23篇 |
2019年 | 48篇 |
2018年 | 51篇 |
2017年 | 72篇 |
2016年 | 62篇 |
2015年 | 34篇 |
2014年 | 41篇 |
2013年 | 552篇 |
2012年 | 50篇 |
2011年 | 44篇 |
2010年 | 49篇 |
2009年 | 43篇 |
2008年 | 35篇 |
2007年 | 31篇 |
2006年 | 20篇 |
2005年 | 20篇 |
2004年 | 20篇 |
2003年 | 27篇 |
2002年 | 20篇 |
2001年 | 28篇 |
2000年 | 17篇 |
1999年 | 26篇 |
1998年 | 10篇 |
1997年 | 16篇 |
1996年 | 13篇 |
1995年 | 17篇 |
1994年 | 11篇 |
1993年 | 15篇 |
1992年 | 13篇 |
1991年 | 11篇 |
1990年 | 8篇 |
1989年 | 7篇 |
1987年 | 9篇 |
1986年 | 9篇 |
1985年 | 10篇 |
1984年 | 13篇 |
1983年 | 7篇 |
1982年 | 11篇 |
1981年 | 15篇 |
1980年 | 12篇 |
1979年 | 15篇 |
1978年 | 6篇 |
1977年 | 8篇 |
1976年 | 14篇 |
1975年 | 7篇 |
1974年 | 9篇 |
1973年 | 12篇 |
1972年 | 5篇 |
排序方式: 共有1634条查询结果,搜索用时 46 毫秒
1.
Alexander Thomas T. Smith 《Anthropology today》2010,26(4):4-7
The pro‐life movement regularly employs tactics of political harassment in its campaign against abortion. As the murder of the controversial abortion doctor George Tiller in Wichita, Kansas, demonstrated last year, such tactics often betray a potential for violence. This paper explores how the militant tactics of the pro‐life movement in the 1990s have contributed to the formation of a ‘new’ political identity in Kansas politics: that of the moderate Republican. But for those that seek to counter‐mobilize against the Christian right, the political stakes remain high. 相似文献
2.
Thomas R. Wolanin 《历史新书评论》2013,41(6):120-121
3.
ABSTRACT This paper examines the role of the structure of transportation rates in the Weber-Moses triangle model. It shows that, in Zeigler's analysis, the appearance of the price elasticities of demand for inputs actually vanish by a simple application of the envelope theorem. Applying comparative statics analysis, we show when transportation rates are a function of quantity and distance, the assumptions that the production function is homogeneous of degree one and the transportation rates elasticities with respect to quantity and distance are constant are not sufficient to insure that the optimum location is independent of the level of output. This result is significantly different from that obtained by either Miller and Jensen or Zeigler. 相似文献
4.
5.
6.
7.
8.
Thomas Kleinknecht 《Berichte zur Wissenschaftsgeschichte》1986,9(3):147-160
The various scholarly and scientific endeavours — comprising both arts and sciences —, which British statesmen persued in their leisure time, transcend the mere biographical aspect. In the light of the slow, yet steady professionalisation of educational and political institutions, many of them modernised or newly created in order to achieve what came to be called “National Efficiency”, the literary and scientific pastimes of men, like Gladstone, Morley, Salisbury, Balfour or Haldane, seemed soon to become somewhat obsolete. Yet, it is argued, that the often professedly amateurish activities did not merely display the traditional hobby attitude to the sciences, so characteristic of the wealthy aristocrat, but in some cases revealed a good understanding of the scientific and educational needs of society, leading up to their active advancement. The British amateurs, it would seem, were pleading for providing a balanced higher education and training, rather than going for the technical excellence of the political rival Imperial Germany, which dazzled and, at the same time, intimidated some of them. 相似文献
9.
10.