Columbia subject headings:
Architecture, Ottoman--Balkan Peninsula--History.
Architecture, Ottoman--Turkey--History.
Balkan Peninsula--Buildings, structures, etc.--History.
Bridges--Balkan Peninsula--History.
Bridges--Turkey--History.
Turkey--Buildings, structures, etc.--History.
Harvard subject headings:
Architecture, Ottoman--Balkan Peninsula--History.
Architecture, Ottoman--Turkey--History.
Balkan Peninsula--Buildings, structures, etc.--History.
Bridges--Balkan Peninsula--History.
Bridges--Turkey--History.
Turkey--Buildings, structures, etc.--History.
Princeton subject headings:
Architecture, Ottoman--Balkan Peninsula--History.
Architecture, Ottoman--Turkey--History.
Balkan Peninsula--Buildings, structures, etc.--History.
Bridges--Balkan Peninsula--History.
Bridges--Turkey--History.
Turkey--Buildings, structures, etc.--History.