Title: Geologii︠a︡ i neftegazonosnostʹ severnykh raĭonov Uralo-Povolzhʹi︠a︡
Subjects: Petroleum, Congresses, Geology
Places: Russia (Federation), Ural Mountains Region, Volga River Region
People: P. A. Sofronit︠s︡kiĭ (1910-1997,)