"Ukraine. Ministerstvo vuhilʹnoï promyslovosti. Tekhnicheskoe upravlenie." . . . . . . "Istorii︠a︡ tekhnicheskogo razvitii︠a︡ ugolʹnoĭ promyshlennosti Donbassa V 2-kh t" . . . . . . . "Istorii︠a︡ tekhnicheskogo razvitii︠a︡ ugolʹnoĭ promyshlennosti Donbassa. : V 2-kh t" . . . .