Columbia subject headings:
Don River Valley (Russia)--Antiquities.
Excavations (Archaeology)--Russia (Federation)--Don River Valley.
Paleolithic period--Russia (Federation)--Don River Valley.
Harvard subject headings:
Don River Valley (Russia)--Antiquities.
Excavations (Archaeology)--Russia (Federation)--Don River Valley.
Paleolithic period--Russia (Federation)--Don River Valley.
Princeton subject headings: