Columbia subject headings:
Harvard subject headings:
Book collecting--Russia--Exhibitions.
Books--History--Exhibitions.
Books--Russia (Federation)--Saint Petersburg--History--Exhibitions.
Nauchnai︠a︡ biblioteka Ėrmitazha--Exhibitions.
Private libraries--Russia--History.
Princeton subject headings:
Book collecting--Russia--Exhibitions.
Books--History--Exhibitions.
Gosudarstvennyĭ Ėrmitazh (Russia)--Catalogs.
Gosudarstvennyĭ Ėrmitazh (Russia)--History.
Private libraries--Russia--History.