(NiSSLEDOWANIE POLEZNYH ISKOPAEMYH NA OBOGATIMOSTX (B/s - (NmITROFANOW(B, (NsPIRIDON iWANOWI^s ((NmOSKWA (B:s (NgOSGORTEHIZDAT(B,s, 1962)
(NbIBLIOGR(B. : 568-576s
Keywords: (NoBOGA]ENIE MINERALXNOGO SYRXQs