Analysis on Stratified Cluster Sampling of Overseas Forest Resources Surveys

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ZHI Changgui, WANG Liuru, CHEN Xinyun, WANG Wei, LI Liwei, ZHANG Qiao

Forest and Grassland Resources Research . 2015, (4): 28 -32 . DOI: 10.13466/j.cnki.lyzygl.2015.04.006