Columbia subject headings:
Balkan Peninsula--Church history.
Orthodox Eastern church buildings--Balkan Peninsula--History.
Orthodox Eastern church buildings--Balkan Peninsula--Pictorial works.
Harvard subject headings:
Balkan Peninsula--Church history.
Orthodox Eastern church buildings--Balkan Peninsula--History.
Orthodox Eastern church buildings--Balkan Peninsula--Pictorial works.
Princeton subject headings:
Balkan Peninsula--Church history.
Orthodox Eastern church buildings--Balkan Peninsula--History.
Orthodox Eastern church buildings--Balkan Peninsula--Pictorial works.