(NpRAKTI^ESKIE RABOTY PO KURSU \KSPLUATACII GIDROMELIORATIWNYH SISTEM (B:s (Nu^EBNOE POSOBIE DLQ GIDROMELIORATIWNYH TEHNIKUMOW (B/s - (NoFFENGENDEN(B, (Ns(B.(Nrs; (NpANADIADI(B, (Na(B.(Np(B.s; (NqRU[IN(B, (Nm(B.(Nis ((Nm(B. :s (NsELXHOZGIZ(B,s, 1959)
Keywords: (NsELXSKOHOZQJSTWENNAQ MELIORACIQs