Columbia subject headings:
Art--Conservation and restoration--Russia (Federation)--Congresses.
Art--Expertising--Russia (Federation)--Congresses.
Museum techniques--Russia (Federation)--Congresses.
Harvard subject headings:
Art--Conservation and restoration--Russia (Federation)--Congresses.
Art--Expertising--Russia (Federation)--Congresses.
Museum techniques--Russia (Federation)--Congresses.
Princeton subject headings: