(NgEOLOGIQ POLEZNYH ISKOPAEMYHs (Nu^EBNIK DLQ WUZOWs - (NsTAROSTIN(B,(Nw(B. (Ni(B.s (NwIKTOR iWANOWI^s; (NiGNATOW(B,(Np(B. (Na(B.s (NpETR aLEKSEEWI^s ((Nm(B.s (NiZD(B-(NWO mgus, 1997)