Columbia subject headings:
Harvard subject headings:
Greece--History--146 B.C.-323 A.D.
Human ecology--Greece--History.
Human ecology--Rome--History.
Rome--History--Augustus, 30 B.C.-14 A.D.
Princeton subject headings:
Greece--History--146 B.C.-323 A.D.
Human ecology--History--Greece--Human ecology--History.
Human ecology--History--Rome--Human ecology--History.
Rome--History--Augustus, 30 B.C.-14 A.D.