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Water saving technology and saving water in China EI期刊论文
2007
作者:  Huang Jikun;  Wang Jinxia
收藏  |  浏览/下载:23/0  |  提交时间:2012/06/11
The role of artisanal and small-scale mining in China's economy EI期刊论文
2006
作者:  Shen Lei
收藏  |  浏览/下载:8/0  |  提交时间:2012/06/11
Conversion of land use types and ecological effect in Northeast China EI期刊论文
2005
作者:  Chen Yufu;  Liu Yansui
收藏  |  浏览/下载:12/0  |  提交时间:2012/06/11


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