A Purposive Sampling Design Method Based on Typical Points and Its Application in Soil Mapping
YANG Lin1, ZHU A-Xing1, QIN Chengzhi1, LI Baolin1, PEI Tao1, QIU Weili2, XU Zhig
PROGRESS IN GEOGRAPHY ›› 2010, Vol. 29 ›› Issue (3) : 279-286.
A Purposive Sampling Design Method Based on Typical Points and Its Application in Soil Mapping
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