(NmEHANIZACIQ OTKRYTYH GORNYH RABOT (B/s - (NpONOMAREW(B, (NiWAN pOLUEKTOWI^(B.s ((NmOSKWA (B: s (NgOSGORTEHIZDAT(B, s, 1960)
Keywords: (NgORNYE RABOTY(B, (NOTKRYTYE (B- (NmEHANIZACIQs