Title: Ukazanii͡a po upravlenii͡u obrusheniem pokryvai͡ushchikh porod na podzemnykh rudnikakh proizvodstvennogo obʺedinenii͡a "Apatit" im. S.M. Kirova
Subjects: Apatite, Mining engineering, Proizvodstvennoe obʺedinenie "Apatit" im. S.M. Kirova
Places: Russia (Federation), Kola Peninsula