METHOD OF MINING SHARPLY ASCENDING ORE BODIES
KOPYLOV EVGENIJ M,SU, KORNEV GENNADIJ N,SU, SHVYDKO PETR V,SU, PONOMAREV SERGEJ F,SU, DYADYUSHKO VIKTOR R,SU
Year of Publication 25.06.1980
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Year of Publication 25.06.1980
Patent