(NoB]AQ GEOLOGIQ DLQ GORNYH SPECIALXNOSTEJ (B:s (Nu^EBNIK (B/s - (NgR@[E(B, (Np(B.(Na(B.s ((NmOSKWA (B:s (NuGLETEHIZDAT(B,s, 1948)
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Keywords: (NoB]AQ GEOLOGIQ (B- (Nu^EBNIKIs