PDF(1635 KB)
Design and Operation Channels of the Ecological Purchase in the Shaanxi-Gansu-Ningxia Border Area
YAN Junping, YAN Yan
Acta Geographica Sinica ›› 2002, Vol. 57 ›› Issue (3) : 345-355.
PDF(1635 KB)
PDF(1635 KB)
Design and Operation Channels of the Ecological Purchase in the Shaanxi-Gansu-Ningxia Border Area
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