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   10499篇
  免费   261篇
  国内免费   1篇
财政金融   1894篇
工业经济   913篇
计划管理   1819篇
经济学   2339篇
综合类   225篇
运输经济   52篇
旅游经济   147篇
贸易经济   1710篇
农业经济   461篇
经济概况   1169篇
信息产业经济   1篇
邮电经济   31篇
  2021年   65篇
  2020年   138篇
  2019年   173篇
  2018年   234篇
  2017年   256篇
  2016年   226篇
  2015年   161篇
  2014年   226篇
  2013年   957篇
  2012年   318篇
  2011年   313篇
  2010年   296篇
  2009年   340篇
  2008年   304篇
  2007年   288篇
  2006年   229篇
  2005年   203篇
  2004年   218篇
  2003年   212篇
  2002年   168篇
  2001年   218篇
  2000年   216篇
  1999年   190篇
  1998年   183篇
  1997年   208篇
  1996年   187篇
  1995年   191篇
  1994年   174篇
  1993年   173篇
  1992年   201篇
  1991年   192篇
  1990年   160篇
  1989年   156篇
  1988年   129篇
  1987年   121篇
  1986年   131篇
  1985年   183篇
  1984年   163篇
  1983年   173篇
  1982年   142篇
  1981年   172篇
  1980年   144篇
  1979年   162篇
  1978年   135篇
  1977年   124篇
  1976年   126篇
  1975年   110篇
  1974年   101篇
  1973年   86篇
  1972年   65篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
Advertised food specials may be deceptive to consumers who mistake the advertised prices as reduced prices. Of all the advertised food specials examined in this research, at least 13 percent and as many as 25 percent of those advertised in newspapers were not reduced in price.  相似文献   
52.
53.
The current drought in central and southern Africa has focused attention on issues relating to the provision and supply of potable water. In the case of Bulawayo, Zimbabwe's second city, there is the very real prospect that water supplies may be exhausted before the onset of the next rainy season. This paper explores the background to this problem and shows how poor planning, financial constraints, and political intransigence have failed to keep pace with a policy aimed at the provision of water to the inhabitants in this expanding urban environment Alternative sources of supply. in particular a pipeline to the Zambezi River, are also investigated.  相似文献   
54.
Several indexes for comparing the cost of life insurance policies are currently available. A variety of criticisms of these indexes has been offered. This paper identifies an additional problem: consumers may lack confidence in index values because they do not reconcile with data about company performance (e.g., lapse ratios, returns on invested assets). Analysis results suggest that policy costs are as much a function of actuarial manipulation for marketing advantage as of commonly cited textbook factors (mortality, interest, expenses) and competitive factors (lapse ratio, average policy size).  相似文献   
55.
A breakeven point analysis of selected modes of recreational travel in which the costs of ownership and travel use of representative self-contained recreation vehicles are compared with the costs of lodging and travel by private automobile.  相似文献   
56.
57.
Mass media are an essential factor for the success of small parties, for the media can act in a supporting or an inhibiting way towards these parties. This could be observed for the example of the German Green Party: As the Greens were becoming more and more important in the parliaments, the media changed their formerly very critical view of the party to a more factual and positive reporting. Is the party “Die Linke” now experiencing a similar process? The present study analyses the comments of three national German newspapers from 2005 to 2009, using a quantitative content analysis with the aim of bringing to light how the media acted towards “Die Linke”. The results show that commenting has hardly changed since earlier studies were published. Factual issues only play a marginal role, and the party is judged negatively in all newspapers, with the tageszeitung slightly distinct from the other two papers, though.  相似文献   
58.
A medico-demographic periodization of Russian socioeconomic reforms is presented, according to which the state of public health is characterized by different vectors.  相似文献   
59.
A comparative study of external mortality risk factors according to World Bank experts (Dying Too Young Report, 2005) and findings of other projects, as well as mortality reduction programs, is presented. The World Bank experts overrate the significance of smoking and lead pollution as mortality factors and underrate that of alcohol, air pollution, and unfavorable occupational environments. In addition, the impacts of radon, climate warming, and low temperatures, which are very important negative factors for Russia, are overlooked in the Report. Although mortality reduction measures are very topical under the current demographic crisis, certain federal target programs envisage very general measures, and the death rate remains high. Road Safety Improvement, which is the most concrete among these programs, may indeed help reduce road accident-related mortality. The importance of air pollution as a risk factor may grow as a result of changes in the structure of the fuel balance and an increased share of coal combustion.  相似文献   
60.
Fractal poverty traps   总被引:1,自引:0,他引:1  
  相似文献   
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