Columbia subject headings:
Geopolitics--Rome.
Rome--Politics and government--30 B.C.-476 A.D.
Harvard subject headings:
Classical geography.
Geography, Ancient.
Geography--Rome.
Rome--Historical geography.
Rome--History--Augustus, 30 B.C.-14 A.D.
Rome--Politics and government--30 B.C.-68 A.D.
Princeton subject headings:
Geography, Ancient.
Geography--Rome.
Rome--Politics and government--30 B.C.-68 A.D.