Title: Pervai︠a︡ Respublikanskai︠a︡ nauchno-tekhnicheskai︠a︡ konferent︠s︡ii︠a︡, posvi︠a︡shchennai︠a︡ rezulʹtatam nauchnykh issledovaniĭ v 1970-1972 godakh, Gornai︠a︡ sekt︠s︡ii︠a︡
Subjects: Coal mines and mining, Congresses