COLLECTOR FOR FLOTATING OF TIN-CONTAINING ORES
VELIKASOVA MARGARITA S,SU, MOLODKINA INNA A,SU, ANIKINA GERTRUDA N,SU, POLTARATSKAYA ELENA S,SU, GOLOV VLADISLAV M,SU, VOROBEV ALEKSANDR D,SU
Year of Publication 25.09.1978
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Year of Publication 25.09.1978
Patent