PDF(169 KB)
A Study on the Calculation of Investment Risk in Rational Application of Fertilizer
Yu Meng ZHANG;Zhi Ming BAI;Nai Jian ZHOU
Systems Engineering - Theory & Practice ›› 1999, Vol. 19 ›› Issue (11) : 127-129.
PDF(169 KB)
PDF(169 KB)
A Study on the Calculation of Investment Risk in Rational Application of Fertilizer
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