Columbia subject headings:
Aqueducts (Roman law)
Aqueducts.
Roman law.
Water (Roman law)
Water-supply--Italy--Rome.
Harvard subject headings:
Aqueducts
Aqueducts--Italy--Rome--Early works to 1800.
Water-supply--Italy--Rome--Early works to 1800.
Water-supply--Italy--Rome.
Princeton subject headings:
Aqueducts.
Water-supply--Italy--Rome.