PDF(364 KB)
The Effect of Soil Types on the Process of Farmland in Sanjiang Plain in Recent 50 Years
BU Kun, WANG Wen-juan, ZHANG Shu-wen, ZHANG Yang-zhen, ZHANG Yu-bo
Resources Science ›› 2008, Vol. 30 ›› Issue (5) : 702-708.
PDF(364 KB)
PDF(364 KB)
The Effect of Soil Types on the Process of Farmland in Sanjiang Plain in Recent 50 Years
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