全文获取类型
收费全文 | 3804篇 |
免费 | 187篇 |
出版年
2023年 | 29篇 |
2020年 | 92篇 |
2019年 | 78篇 |
2018年 | 164篇 |
2017年 | 166篇 |
2016年 | 155篇 |
2015年 | 106篇 |
2014年 | 106篇 |
2013年 | 1172篇 |
2012年 | 102篇 |
2011年 | 120篇 |
2010年 | 84篇 |
2009年 | 77篇 |
2008年 | 73篇 |
2007年 | 61篇 |
2006年 | 57篇 |
2005年 | 40篇 |
2004年 | 37篇 |
2003年 | 33篇 |
2002年 | 42篇 |
2001年 | 42篇 |
2000年 | 50篇 |
1999年 | 47篇 |
1998年 | 39篇 |
1997年 | 34篇 |
1996年 | 36篇 |
1995年 | 35篇 |
1994年 | 21篇 |
1993年 | 28篇 |
1992年 | 26篇 |
1991年 | 35篇 |
1990年 | 26篇 |
1989年 | 34篇 |
1988年 | 29篇 |
1987年 | 29篇 |
1986年 | 36篇 |
1985年 | 41篇 |
1984年 | 29篇 |
1983年 | 35篇 |
1982年 | 27篇 |
1981年 | 40篇 |
1980年 | 35篇 |
1979年 | 35篇 |
1978年 | 36篇 |
1977年 | 26篇 |
1976年 | 32篇 |
1975年 | 24篇 |
1973年 | 27篇 |
1972年 | 22篇 |
1969年 | 22篇 |
排序方式: 共有3991条查询结果,搜索用时 15 毫秒
91.
Claire Feuvrier Prévotat Isabelle Paresys Jean-Michel Sallmann Joël Cornette Laurent Bourquin Françoise Waquet Nicole Lemaître Jean-Yves Mollier Isabelle Backouche Dominique Poulot Perrine Simon-Nahum Marie-Claire Hoock-Demarle 《Revue de synthèse / Centre international de synthèse》1996,117(3-4):547-575
92.
93.
ABSTRACT. This paper uses new estimates of metropolitan factor demand and output supply functions to study how federal, state, and local fiscal policies affect metropolitan economies. We illustrate our work with findings for ten metropolitan areas in five states for changes in state corporate income taxes, local property taxes, the federal corporate income tax, an investment tax credit, interest rates, public capital stocks, output prices, and tax and regulatory policies affecting gross wages. It is clear from these simulations that a policy that is nominally the same everywhere will have repercussions that vary widely across regions and cities. 相似文献
94.
95.
96.
K. B. PERSSON 《Archaeometry》1997,39(2):441-443
A new method for soil phosphate analysis has been developed for field measurement which will increase the applicability of phosphate mapping in archaeological prospection. 相似文献
97.
Some 630 Roman silver coins excavated at Augusta Raurica (Switzerland) have been analysed by non-destructive X-ray fluorescence and X-ray diffraction. Furthermore, the density and the weight have been determined. The measured average density of plated and massive depletion-silvered coins is lower than the density calculated from the chemical composition, whereas massive coins display equal values for both of the densities. Based on experimental X-ray investigations of modern silver (tempering, acid treatment, production of corrosion layers), the nature of corrosion products on silver, their impact on surface analysis, and aspects of wearing-off by circulation are briefly discussed. 相似文献
98.
The present paper surveys the discussions conducted by official statisticians regarding the ideal structure according to which a national data collection system should have been designed if it was to meet the challenges put up by the various transformation Western countries have undergone since the beginning of the 19th century. Arguments in favour of coordination, centralization, or decentralization have emerged for the first time in 1832 Britain, when the Statistical Bureau of the Board of Trade was created. Up to 1945, this debate went on, the industrial take-off, the economic crises, and the world wars all being occasions for its protagonists to put forward their preferred view. The perspective we take here is original in two respects: on the one hand, instead of confining ourselves to the major statistical systems (those of France, Britain, and the USA), we intend to evoke a large number of cases and, from this comparative standpoint, propose a general account of the drive towards centralization; on the other hand, instead of restraining our-selves to the 19th century, we cover the entire time-frame extending from 1800 to 1945. 相似文献
99.
Jean-Marc Drouin Patrick Gautier Dalché Fabien Chareix Charles Lenay Monique Cottret Bernard Vandewalle François Laplanche Françoise Waquet Agnès Spiquel Ariane Poulantzas Olivier Martin Sophie Roux Ilana Löwy Françoise Waquet Isabelle Brian Michel Cassan Jean-Marc Rohrbasser Jean-Michel Vienne Marc Renneville Bernard Lahire Mikhaäl Xifaras Bertrand Binoche Stéphane Haber Jean-François Pradeau Noël Bonneuil Marie Jaisson 《Revue de synthèse / Centre international de synthèse》1997,118(4):551-613
100.
Lyons JB 《Journal of the history of the neurosciences》1997,6(1):50-60
Senator George Sigerson (1836-1925), Dublin's first neurologist, was also a significant contributor to Anglo-Irish literature. His medical career and literary accomplishments are outlined, the focus of the article being Sigerson's friendly relationship with Charcot (with whom he corresponded), and whose Le?ons sur les maladies du système nerveux he translated. 相似文献