Columbia subject headings:
Famines--Rome.
Riots--Rome.
Rome--Politics and government--30 B.C.-68 A.D.
Rome--Politics and government--510-30 B.C.
Harvard subject headings:
Famines--Italy--Rome--History.
Riots--Italy--Rome--History.
Princeton subject headings:
Famines--Italy--Rome--History.
Riots--Italy--Rome--History.