Columbia subject headings:
Geology, Stratigraphic--Pliocene.
Geology, Stratigraphic--Quaternary.
Geology--Russia (Federation)--Siberia, Western.
Harvard subject headings:
Princeton subject headings:
Geology, Stratigraphic--Pliocene.
Geology, Stratigraphic--Quaternary.
Geology--Russia (Federation)--Siberia, Western.