TY - REP AU - Huang,W.Y. AU - Mizer,K. ED - National Symposium on Conservation Systems. Hyatt Regency Chicago, Illinois Center (USA). 14-15 Dec 1987 TI - Using a soil data base system for soil and resource conservation policy analysis SN - 09-161-50895 U1 - 89-019557 PY - 1987/// KW - Conservation KW - Resource conservation KW - Resources KW - Soil conservation KW - Soil management T2 - Optimum erosion control at least cost: proceedings of the national symposium on conservation systems. St. Joseph, Mich. (USA). American Society of Agricultural Engineers. 1987. p. 55-64 ER -