(NpROGNOZIROWANIE \FFEKTIWNOSTI UDOBRENIJ S ISPOLXZOWANIEM MATEMATI^ESKIH MODELEJs - (NiWANOWA(B,(Nt(B. (Ni(B.s (NtAMARA iLXINI^NAs; (Nwashnils; (Nwnii UDOBRENIJ I AGROPO^WOWEDENIQ IM(B. (Nd(B. (Nn(B. (NpRQNI[NIKOWAs ((Nm(B.s (NaGROPROMIZDATs, 1989)
Keywords: (NuDOBRENIQs -- (N|FFEKTIWNOSTXs