(N|FFEKTIWNOSTX UDOBRENIJ PO ZONAM STRANY (B:s (NmATERIALY NAU^NO(B-(NMETODI^ESKOGO SOWE]ANIQ gEOGRAFI^ESKOJ SETI OPYTOW S UDOBRENIQMI (B/s - (NpANNIKOW(B, (Nw(B. (Nd(B.s; (NwSESO@ZNYJ NAU^NO(B-(NISSLEDOWATELXSKIJ INSTITUT UDOBRENIJ I AGROPO^WOWEDENIQ IM(B. (Nd(B. (Nn(B. (NpRQNI[NIKOWAs ((NmOSKWA (B:s (Nb(B. (NI(B.s)
(NwYP(B. 25 (1975, 357 (NS(B.)s (NwYP(B. 27 (1978; 176 (NS(B.)s
Keywords: (NaGROHIMIQ (B- (NpO^WOWEDENIEs