Title: Stratigrafii︠a︡ i floristicheskai︠a︡ kharakteristika Permskikh otlozheniĭ ugolʹnykh mestorozhdeniĭ Pechorskogo basseĭna
Subjects: Coal, Paleobotany, Stratigraphic Geology, Fossil Plants, Geology
Places: Russia (Federation), Pechora River Valley
Time periods: Permian