Columbia subject headings:
Rome--History--Kings, 753-510 B.C.
Rome--Kings and rulers--Biography.
Romulus, King of Rome.
Harvard subject headings:
Rome--History--Kings, 753 B.C.-510 B.C.
Rome--Kings and rulers--Biography.
Romulus, King of Rome.
Princeton subject headings:
Rome--History--Kings, 753-510 B.C.
Rome--Kings and rulers--Biography.
Romulus, King of Rome