Columbia subject headings:
Art, Ancient--Russia (Federation)--Saint Petersburg--Exhibitions.
Art, Medieval--Russia (Federation)--Saint Petersburg--Exhibitions.
Art--Russia (Federation)--Saint Petersburg--Exhibitions.
Gosudarstvennyĭ Ėrmitazh (Russia)--Exhibitions.
Harvard subject headings:
Art, Ancient
Art, Medieval
Art, Russian.
Princeton subject headings:
Art, Ancient.
Art, Medieval.
Art, Russian.