METHOD OF EXCAVATING THICK DEPOSITS OF USEFUL MINERALS
KORENGA E.A.,SU, STEPANOV A.A.,SU, KRUCHININ A.V.,SU, GRISHCHENKO A.V.,SU, GOLIK V.B.,SU, KOSHELEV K.V.,SU, SIDOROV S.I.,SU, ILIN V.G.,SU
Year of Publication 30.03.1986
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Year of Publication 30.03.1986
Patent