Columbia subject headings:
Architecture, Ayyubid--Middle East.
Fortification--Middle East--History--To 1500.
Military architecture--Middle East--History--To 1500.
Harvard subject headings:
Architecture, Ayyubid--Middle East.
Fortification--Middle East--History--To 1500.
Military Architecture--Middle East--History--To 1500.
Princeton subject headings:
Architecture, Ayyubid--Middle East.
Fortification--Middle East--History--To 1500.
Military architecture--Middle East--History--To 1500.