PDF(324 KB)
Research progress on arid-land agriculture in northern China
ZHANG Yi feng, WANG You feng, LIU Lu xiang, HOU Xiang yang
GEOGRAPHICAL RESEARCH ›› 2002, Vol. 21 ›› Issue (3) : 305-312.
PDF(324 KB)
PDF(324 KB)
Research progress on arid-land agriculture in northern China
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