Columbia subject headings:
Harvard subject headings:
De rebus bellicis.
Military engineering.
Rome--Armed Forces--Finance.
Rome--Economic policy.
Rome--Military policy.
Princeton subject headings:
De rebus bellicis.
Military engineering--Early works to 1800.
Rome--Armed forces--Finance--Early works to 1800.
Rome--Economic policy--Early works to 1800.
Rome--Military policy--Early works to 1800.