Columbia subject headings:
Cassius Dio Cocceianus. Roman history.
Rome--History--Civil War, 49-45 B.C.
Harvard subject headings:
Cassius Dio Cocceianus. Historia Romana.
Rome--History--Civil War, 49 B.C.-45 B.C.
Princeton subject headings:
Cassius Dio Cocceianus. Roman history. Book 41-42.