Columbia subject headings:
Gosudarstvennyĭ Ėrmitazh (Russia)
Nicholas I, Emperor of Russia, 1796-1855--Art collections--Catalogs.
Harvard subject headings:
Gosudarstvennyĭ Ėrmitazh (Russia)
Nicholas I, Emperor of Russia, 1796-1855--Art collections--Catalogs.
Princeton subject headings: