Columbia subject headings:
Military diplomas, Roman--Congresses.
Rome--Army--Congresses.
Rome--History, Military--30 B.C.-476 A.D.--Congresses.
Rome--Military antiquities--Congresses.
Roxan, Margaret M.--Bibliography.
Harvard subject headings:
Military diplomas, Roman--Congresses.
Rome--Army--Congresses.
Rome--History, Military--30 B.C.-476 A.D.--Congresses.
Rome--Military antiquities--Congresses.
Roxan, Margaret M.--Bibliography.
Princeton subject headings:
Military diplomas, Roman--Congresses.
Rome--Army--Congresses.
Rome--History, Military--30 B.C.-476 A.D.--Congresses.
Rome--Military antiquities--Congresses.
Roxan, Margaret M.--Bibliography.