Title: Geokhimii︠a︡ i︠u︡rskikh i nizhnemelovykh otlozheniĭ Zapadno-Sibirskoĭ nizmennosti
Subjects: Geochemical prospecting, Jurassic, Natural gas, Stratigraphic Geology, Paleontology, Petroleum, Cretaceous
Places: Western Siberia, Russia (Federation)