Columbia subject headings:
Aqueducts--Jordan.
Water-supply--Jordan.
Harvard subject headings:
Aqueducts--Jordan--To 1500.
Aqueducts--Rome.
Aqueducts--Syria--History.
Jordan--Antiquities, Roman.
Romans--Jordan.
Romans--Syria
Syria--Antiquities, Roman.
Water-supply engineering--Syria--History.
Water-supply enginerring--Jordan--To 1500.
Princeton subject headings: