全文获取类型
收费全文 | 15478篇 |
免费 | 98篇 |
国内免费 | 3篇 |
专业分类
财政金融 | 2639篇 |
工业经济 | 1140篇 |
计划管理 | 2816篇 |
经济学 | 3137篇 |
综合类 | 313篇 |
运输经济 | 107篇 |
旅游经济 | 302篇 |
贸易经济 | 2828篇 |
农业经济 | 774篇 |
经济概况 | 1499篇 |
邮电经济 | 24篇 |
出版年
2021年 | 100篇 |
2020年 | 178篇 |
2019年 | 263篇 |
2018年 | 303篇 |
2017年 | 341篇 |
2016年 | 339篇 |
2015年 | 233篇 |
2014年 | 354篇 |
2013年 | 1414篇 |
2012年 | 400篇 |
2011年 | 434篇 |
2010年 | 411篇 |
2009年 | 443篇 |
2008年 | 487篇 |
2007年 | 452篇 |
2006年 | 379篇 |
2005年 | 375篇 |
2004年 | 330篇 |
2003年 | 336篇 |
2002年 | 310篇 |
2001年 | 312篇 |
2000年 | 311篇 |
1999年 | 289篇 |
1998年 | 284篇 |
1997年 | 287篇 |
1996年 | 292篇 |
1995年 | 261篇 |
1994年 | 255篇 |
1993年 | 273篇 |
1992年 | 268篇 |
1991年 | 251篇 |
1990年 | 241篇 |
1989年 | 210篇 |
1988年 | 158篇 |
1987年 | 193篇 |
1986年 | 204篇 |
1985年 | 288篇 |
1984年 | 289篇 |
1983年 | 295篇 |
1982年 | 253篇 |
1981年 | 247篇 |
1980年 | 208篇 |
1979年 | 220篇 |
1978年 | 160篇 |
1977年 | 168篇 |
1976年 | 146篇 |
1975年 | 117篇 |
1974年 | 112篇 |
1973年 | 109篇 |
1972年 | 75篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
This paper applied cost-effectiveness analysis to the use of drug therapy in the treatment of AIDS. The empirical approach adopted overcame the facts that the samples of patients had varying clinical prognoses, had variable entry dates into the samples and, because AIDS is a terminal disease, had variable exit dates. Holding these variables constant, administration of the drug AZT proved to be a less costly alternative than other existing palliatives for AIDS. The sub-sample of patients treated with AZT had lower hospitalization costs, lower caring costs and sufferers had an increased ability to continue to participate for longer as economically active members of society. 相似文献
62.
We have occasionally encountered patients on nonsteroidal antiinflammatory drugs (NSAIDs) in whom double contrast barium studies revealed persistent flattening and stiffening of the distal greater curvature of the stomach. We therefore performed a study to determine the frequency of this finding in patients with NSAID-related gastropathy. Twenty-one cases of erosive gastritis, gastric ulcers, and/or gastric scarring associated with a known history of NSAID use were reviewed by two radiologists who made a joint decision regarding the presence or absence of greater curvature antral flattening. This finding was seen radiographically in five of the 21 patients (24%). Four of the five patients with antral flattening had associated erosions or ulcers in the gastric antrum. The remaining patient had antral flattening as an isolated finding. Our experience suggests that flattening of the greater curvature of the distal antrum, particularly if associated with erosive gastritis or gastric ulcers, is a useful radiologic sign of NSAID-related gastropathy. 相似文献
63.
64.
65.
66.
2002年4月3日央行颁布了《商业银行柜台记账式国债交易管理办法》,该《办法》对于商业银行和投资者将产生的深远的影响。 相似文献
67.
吕臣 《广西经济管理干部学院学报》2006,18(3):52-55
文章介绍了LPAC项目在我国西部地区的实现现状,并就有代表性的地区进行了具体分析。肯定了LPAC项目的积极作用:同时,也指出了实施过程中存在的问题,并提出了建议。 相似文献
68.
69.
The impact of meat product recall events on consumer demand (beef, pork, poultry, and other consumption goods) in the USA is tested empirically. Beef, pork, and poultry recall indices are constructed from both the Food Safety Inspection Service's meat recall events and from newspaper reports over the period 1982–1998. Following previous product recall studies, recall indices are incorporated as shift variables in consumers’ demand functions. Estimating an absolute price version of the Rotterdam demand model, findings indicate that Food Safety Inspection Service's meat recall events significantly impact demand, and newspaper reports do not. Moreover, although elasticities related to recall events are significant they are small in magnitude relative to price and income effects. Any favourable effects on the demands of meat substitutes for a recall are offset by a more general negative effect on meat demand. The general negative effect indicates a shift out of meat to non-meat consumption goods. 相似文献
70.
Solomon GL 《Medical economics》2000,77(11):31-2, 35