Systematic evaluation of sustainable development of coal district based upon principal component analysis and research on countermeasures

被引:0
|
作者
Jing, Zhu [1 ]
Jiazhuang, Shi [1 ]
机构
[1] School of Management and Economics, Hebei University of Science and Technology, 050000, Hebei, China
关键词
4;
D O I
10.3923/itj.2013.5119.5121
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页码:5119 / 5121
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