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[期刊论文] 作者：Chen Zhigang,Qu Futian,Wang Qi,
来源：中国人口．资源与环境：英文版 年份：2007
In China, farmland property rights characterized by the household-responsibility system (HRS) have been improved since the reform and opening-up. The rights of...
Seasonal variations of the near surfacelayer parameters over the Antarctic ice sheet in Princess Eli
[期刊论文] 作者：Chen Zhigang,Bian Lingen,Xiao Cunde,Lu Longhua,Ian Allison,
来源：黑龙江科技信息 年份：2007
本文通过对荣华二采区10...
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