Columbia subject headings:
Excavations (Archaeology)--Soviet Union--Congresses.
Soviet Union--Antiquities--Congresses.
Soviet Union--Civilization--Congresses.
Harvard subject headings:
Excavations (Archaeology)--Former Soviet republics--Congresses.
Excavations (Archaeology)--Soviet Union--Congresses.
Former Soviet republics--Antiquities--Congresses.
Soviet Union--Antiquities--Congresses.
Soviet Union--Civilization--Congresses.
Princeton subject headings:
Excavations (Archaeology)--Soviet Union--Congresses.
Soviet Union--Antiquities--Congresses.
Soviet Union--Civilization--Congresses.