Title: Uslovii͡a obrazovanii͡a terrigennoĭ tolshchi nizhnego karbona Kuĭbyshevskoĭ oblasti, Tatarii i Bashkirii
Subjects: Stratigraphic Geology, Geology
Places: Russia (Federation), Kuĭbyshevkai͡a oblastʹ, Tatarstan, Bashkortostan
Time periods: Carboniferous