(NmELIORACIQ ZEMELX pOWOLVXQ (B:s (NdOKLADY pOWOLVSKOGO REGIONALXNOGO SOWE]ANIQ (B/s - (NaKADEMIQ NAUK sssrs; (NwOLVSKIJ NAU^NO(B-(NISSLEDOWATELXSKIJ INSTITUT ORO[AEMOGO ZEMLEDELIQ msh sssrs; (NpO^WENNYJ IN(B-(NT IM(B. (Nw(B.(Nw(B. (NdOKU^AEWAs; (NgLAWWOLGOWODSTROJ mm I whs ((NwOLGOGRAD (B:s (NnIVNE(B-(NwOLVSKOE KN(B. (NIZD(B-(NWO(B,s, 1971)
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Keywords: (NsELXSKOHOZQJSTWENNAQ MELIORACIQs; (NoRO[ENIEs