合理施肥中投资风险预测研究

张玉峰;白志明;周乃健

A Study on the Calculation of Investment Risk in Rational Application of Fertilizer

Yu Meng ZHANG;Zhi Ming BAI;Nai Jian ZHOU

系统工程理论与实践 . 1999, (11): 127 -129 . DOI: 10.12011/1000-6788(1999)11-127