Columbia subject headings:
Harvard subject headings:
Caucasus--Antiquities.
Caves--Caucasus.
Excavations (Archaeology)--Caucasus.
Excavations (Archaeology)--Russia, Northern.
Paleolithic period--Caucasus.
Paleolithic period--Russia, Northern.
Russia, Northern--Antiquities.
Princeton subject headings:
Excavations (Archaeology)--Caucasus.
Excavations (Archaeology)--Russia (Federation)--Siberia.
Paleolithic period--Caucasus.
Paleolithic period--Russia (Federation)--Siberia.