Columbia subject headings:
Oradea (Romania)--Antiquities.
Oradea (Romania)--History.
Harvard subject headings:
Art--Romania--Oradea--History.
Fortification--Romania--Oradea--History.
Oradea (Romania)--History.
Princeton subject headings:
Art--Romania--Oradea--History.
Fortification--Romania--Oradea--History.
Oradea (Romania)--History.