Columbia subject headings:
Constitutional history--Rome.
Emperors--Rome.
Roman law--Sources.
Rome--Legal antiquities.
Harvard subject headings:
Constitutional history--Rome
Emperors--Rome
Emperors--Rome--Duties
Roman law--Antiquities.
Roman law--Sources.
Rome--Legal antiquities.
Princeton subject headings:
Emperors--Rome.
Roman law--Sources.
Rome--Constitutional history.
Rome--Legal antiquities.