Columbia subject headings:
Harvard subject headings:
Gosudarstvennyĭ Ėrmitazh (Russia)
Princeton subject headings:
Cultural property--Protection--Russia (Federation)--Saint Petersburg.
Gosudarstvennyĭ Ėrmitazh (Russia)
Saint Petersburg (Russia)--History--Siege, 1941-1944.
World War, 1939-1945--Art and the war.