Columbia subject headings:
Legislation (Roman law)--History.
Rome--History--Severans, 193-235.
Harvard subject headings:
Legislation (Roman law)--History.
Roman law--History.
Rome--History--Severans, 193-235.
Rome--Politics and government--30 B.C.-284 A.D.
Princeton subject headings:
Roman law--History.
Rome--History--Severans, 193-235.
Rome--Politics and government--30 B.C.-284 A.D.