Title: Putevoditelʹ geologicheskoĭ ėkskursii po nefti︠a︡nym raĭonam Volgo-Uralʹskogo regiona i razrezam verkhnego dokembrii︠a︡ i paleozoi︠a︡ I︠U︡zhnogo Urala
Subjects: Petroleum, Geology
Places: Russia (Federation)