A STUDY ON THE HARNESSING TECHNIQUES OF SLOPING FIELD IN THE EASTERN YANSHAN MOUNTAIN AREA
Wang Hongqing, Xie Yongsheng
JOURNAL OF NATURAL RESOURCES ›› 1999, Vol. 14 ›› Issue (1) : 42-46.
A STUDY ON THE HARNESSING TECHNIQUES OF SLOPING FIELD IN THE EASTERN YANSHAN MOUNTAIN AREA
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