PDF(610 KB)
TRENDS AND BASIC CAUSES OF THE REGIONAL PATTERN CHANGES IN CHINA’S GRAIN PRODUCTION SINCE 1950’S
Lu Qi, Lu Minglun
PROGRESS IN GEOGRAPHY ›› 1997, Vol. 16 ›› Issue (1) : 31-36.
PDF(610 KB)
PDF(610 KB)
TRENDS AND BASIC CAUSES OF THE REGIONAL PATTERN CHANGES IN CHINA’S GRAIN PRODUCTION SINCE 1950’S
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