Columbia subject headings:
Icons, Russian--Catalogs.
Icons--Private collections--Russia--Catalogs.
Tretʹi︠a︡kov, Pavel Mikhaĭlovich, 1832-1898--Art collections.
Harvard subject headings:
Icons--Private collections--Russia (Federation)--Catalogs.
Icons--Russia (Federation)--Catalogs.
Tretʹi︠a︡kov, Pavel Mikhaĭlovich, 1832-1898.--Catalogs.
Princeton subject headings:
Icons--Private collections--Russia--Catalogs.
Icons--Russia--Catalogs.
Tretʹi︠a︡kov, Pavel Mikhaĭlovich, 1832-1898--Art collections.