(NwODNYJ REVIM PO^WY I UROVAJ (B/s - (NkOZIN(B, (NmIHAIL aLEKSEEWI^s ((Nm(B. :s (NkOLOS(B,s, 1977)
(NlIT(B. (NS(B. : 290-301s
Keywords: (NsELXSKOHOZQJSTWENNAQ MELIORACIQs