PDF(797 KB)
Evaluation and Analysis on Soil Quality Changes in the Sanjiang Plain
HU Jin-ming, LIU Xing-tu
GEOGRAPHICAL SCIENCE ›› 1999, Vol. 19 ›› Issue (5) : 417-421.
PDF(797 KB)
PDF(797 KB)
Evaluation and Analysis on Soil Quality Changes in the Sanjiang Plain
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