首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   9932篇
  免费   236篇
  国内免费   1篇
财政金融   1783篇
工业经济   821篇
计划管理   1728篇
经济学   2224篇
综合类   223篇
运输经济   48篇
旅游经济   141篇
贸易经济   1604篇
农业经济   411篇
经济概况   1155篇
信息产业经济   1篇
邮电经济   30篇
  2020年   120篇
  2019年   155篇
  2018年   204篇
  2017年   227篇
  2016年   210篇
  2015年   150篇
  2014年   198篇
  2013年   905篇
  2012年   285篇
  2011年   294篇
  2010年   266篇
  2009年   317篇
  2008年   289篇
  2007年   264篇
  2006年   214篇
  2005年   190篇
  2004年   196篇
  2003年   197篇
  2002年   152篇
  2001年   207篇
  2000年   211篇
  1999年   180篇
  1998年   175篇
  1997年   203篇
  1996年   179篇
  1995年   181篇
  1994年   167篇
  1993年   170篇
  1992年   195篇
  1991年   190篇
  1990年   151篇
  1989年   152篇
  1988年   126篇
  1987年   120篇
  1986年   126篇
  1985年   179篇
  1984年   158篇
  1983年   171篇
  1982年   138篇
  1981年   169篇
  1980年   141篇
  1979年   160篇
  1978年   134篇
  1977年   120篇
  1976年   125篇
  1975年   106篇
  1974年   102篇
  1973年   85篇
  1972年   64篇
  1971年   58篇
排序方式: 共有10000条查询结果,搜索用时 6 毫秒
991.
992.
A bstract . A number of issues surround the ownership of farmland by absentee owners and foreign nationals. The response to these concerns in the United States has been the promulgation of the Agriculture Foreign Investment Disclosure Act (AFIDA) which provides for a land purchase reporting system. The present investigation seeks to describe the nature of the foreign land ownership picture in the United States, the status of existing state laws which deal with the matter and. through the example of a case study on the State of Vermont , attempts to describe impacts and implications of such ownerships.  相似文献   
993.
994.
D. N. Shanbhag  M. B. Rao 《Metrika》1983,30(1):159-163
In this note, we make some remarks on the construction of sequences of independent identically distributed random variables and of Markov chains concretely on a probability space (Ω,A,P). We also show that there are non non-trivial martingales of exponential type.  相似文献   
995.
Social scientists investigating the impacts of energy development are increasingly searching for predictive models of the employment benefits to locals. This issue is of extreme importance not only because of the benefits to locals but because of the issue of local benefits as well as the connection with population growth and boom town development. Unfortunately, some of the recent investigations and predictive models are of little utility as a result of certain analytical and methodological faults, including improper assumptions about local labor supply and local preferences. In addition to the assessment of previous investigations, a framework for predicting local employment impacts is suggested. This framework utilizes characteristics and preferences of the local population.  相似文献   
996.
    
  相似文献   
997.
This study investigates the structural shifts in urban population density gradients by first using the shifting regression technique of Farley, Hinich, and McGuire to detect the possible change in the structure of an urban area. Secondly, a generalized random coefficient technique is used to simultaneously detect the possible structural change and stochastic behavior of density gradients. Data for 50 United States SMSA's are used to do the empirical analyses.  相似文献   
998.
A bstract . Henry George's legitimacy as an economist has been denied in much of the literature of the history of economic thought and by some economists who were his approximate contemporaries. These denials have shaped the prevailing negative view of George's economics. An examination of selected representative evidence from George's work fails to support the negative view. George's positions on "The Study of Political Economy," eloquently presented in his 1877 speech to the faculty at the University of California, ate consistent with (and predate) "accepted,""orthodox,""legitimate" views of political economy expressed a decade and more later by J. Laurence Laughlin and Charles F. Dunbar in early classic articles that signified the emergence of economics as an identifiable profession in the United States. Other evidence reveals that George avoided the Ricardian error of failing to understand the role of factor and product substitution in the process of market equilibrium adjustments.  相似文献   
999.
1000.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号