Columbia subject headings:
I͡Usupov family.
Music libraries--Russia (Federation)--Saint Petersburg--Catalogs.
Rossiĭskai͡a nat͡sionalʹnai͡a biblioteka. Otdel notnykh izdaniĭ i zvukozapiseĭ--Catalogs.
Harvard subject headings:
I︠U︡supov family--Library--Catalogs.
Music--Bibliography--Catalogs.
Rossiĭskai︠a︡ nat︠s︡ionalʹnai︠a︡ biblioteka. Otdel notnykh izdaniĭ i zvukozapiseĭ--Catalogs.
Princeton subject headings: