Columbia subject headings:
Buildings--Russia (Federation)--Bulgar (Extinct city)
Buildings--Russia (Federation)--Kazanʹ.
Buildings--Russia (Federation)--Svii︠a︡zhsk.
Harvard subject headings:
Buildings--Russia (Federation)--Bulgar (Extinct city)
Buildings--Russia (Federation)--Kazanʹ
Buildings--Russia (Federation)--Svii︠a︡zhsk.
Buildings--Russia--Kazanʹ.
Bulgar (Extinct city)--Buildings, structures, etc.
Kazanʹ (Russia)--Buildings, structures, etc.
Svii︠a︡zhsk (Russia)--Buildings, structures, etc.
Princeton subject headings:
Bolgar (Russia)--Buildings, structures, etc.
Kazan ́(Russia)--Buildings, structures, etc.
Svii︠a︡zhsk (Russia)--Buildings, structures, etc.