Columbia subject headings:
Aqueducts--Italy--Rome--History.
Rome--Officials and employees.
Water-pipes--Rome--History.
Water-supply--Italy--Rome--History.
Harvard subject headings:
Aqueducts--Italy--Rome.
Rome (Italy)--Officials and employees.
Rome (Italy)--Politics and government.
Rome (Italy)--Social conditions.
Water--Italy--Rome Region--Distribution--History.
Water--Italy--Rome--Distribution--History.
Water-pipes--Italy--Rome Region--History.
Water-pipes--Italy--Rome--History.
Water-supply--Italy--Rome.
Princeton subject headings:
Aqueducts--Italy--Rome--History.
Rome--Officials and employees.
Water-pipes--Rome--History.
Water-supply--Italy--Rome--History.