Columbia subject headings:
Commodus, Emperor of Rome, 161-192.
Pertinax, Publius Helvius, Emperor of Rome, 126-193.
Rome--History--Commodus, 180-192.
Rome--Politics and government--30 B.C.-284 A.D.
Harvard subject headings:
Commodus, Emperor of Rome, 161-192.
Pertinax, Publius Helvius, Emperor of Rome, 126-193.
Rome--History--Commodus, 180-192
Rome--Politics and government--30 B.C.-284 A.D.
Princeton subject headings:
Commodus, Emperor of Rome, 161-192.
Pertinax, Publius Helvius, Emperor of Rome, 126-193.
Rome--History--Commodus, 180-192.
Rome--Politics and government--30 B.C.-284 A.D.