(NoCENKA KA^ESTWA GORNYH MA[IN (B:s (Nu^EBNOE POSOBIE DLQ WUZOW (B/s - (NsOLOD(B, (NgRIGORIJ iWANOWI^s; (NmOSKOWSKIJ GORNYJ INSTITUTs ((NmOSKWA (B:s (Nb(B.(NI(B.,s, 1975)
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Keywords: (NgORNAQ TEHNIKA (B- (Nu^EBNIKIs