Title: Povyshenie polnoty osvoenii︠a︡ nedr i kompleksnosti ispolʹzovanii︠a︡ rud t︠s︡vetnykh i blagorodnykh metallov pri obogashchenii i metallurgicheskoĭ pererabotke
Subjects: Metallurgy, Ore-dressing, Nonferrous metals, Mining engineering