
ON ESTABLISHING A OPEN SYSTEM TO DEVELOPE AGRICULTURE IN THE NORTHWEST SEMI-ARID REGION IN CHINA
Liu Xunhao
JOURNAL OF NATURAL RESOURCES ›› 1989, Vol. 4 ›› Issue (1) : 12-18.
ON ESTABLISHING A OPEN SYSTEM TO DEVELOPE AGRICULTURE IN THE NORTHWEST SEMI-ARID REGION IN CHINA
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