PDF(360 KB)
The impact of dynamic change of cropland on grain production in Jilin
HE Yanfen, ZHANG Bai, MA Chaoqun
Journal of Geographical Sciences ›› 2004, Vol. 14 ›› Issue (1) : 56-62.
PDF(360 KB)
PDF(360 KB)
The impact of dynamic change of cropland on grain production in Jilin
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