Columbia subject headings:
Harvard subject headings:
Roman provinces.
Rome--Army--Recruiting, enlistment, etc.
Rome--Colonies.
Rome--History--Empire, 30 B.C.-476 A.D.
Princeton subject headings:
Rome--Army--Recruiting, enlistment, etc.
Rome--Colonies.
Rome--History--Empire, 30 B.C.-476 A.D.