Str ata Efficiency and Optimization str ategy of Str atified Sampling on Spatial Population
CAO Zhidong, WANG Jinfeng, LI Lianfa, JIANG Chengsheng,
PROGRESS IN GEOGRAPHY ›› 2008, Vol. 27 ›› Issue (3) : 152-160.
Str ata Efficiency and Optimization str ategy of Str atified Sampling on Spatial Population
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