Columbia subject headings:
Bronze age--Caucasus--Congresses.
Caucasus--Antiquities--Congresses.
Excavations (Archaeology)--Caucasus--Congresses.
Iron age--Caucasus--Congresses.
Harvard subject headings:
Bronze age--Caucasus--Congresses.
Caucasus--Antiquities--Congresses.
Excavations (Archaeology)--Caucasus--Congresses.
Iron age--Caucasus--Congresses.
Princeton subject headings: