PDF(211 KB)
Studies on the Determination of Marginal Profit Rate in Rational Application of Fertilizer
Zhang Yufeng;Bai Zhiming;Zhou Naijian
Systems Engineering - Theory & Practice ›› 1997, Vol. 17 ›› Issue (10) : 50-53.
PDF(211 KB)
PDF(211 KB)
Studies on the Determination of Marginal Profit Rate in Rational Application of Fertilizer
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