NON-WORKING SIDE OF OPEN MINE
KOSTOVETSKIJ VIKTOR P,SU, ISHUKIN LEONID V,SU, ANDROSOVA OLGA N,SU, PEVZNER MARK E,SU, ZVERINSKIJ VLADIMIR N,SU, ILINA NADEZHDA G,SU
Year of Publication 15.01.1987
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Year of Publication 15.01.1987
Patent