Columbia subject headings:
Peace.
Thomas, Aquinas, Saint, 1225?-1274. Summa theologica. Prima secundae. Quaestio 40.
War--Moral and ethical aspects.
Harvard subject headings:
Peace
Thomas, Aquinas, Saint, 1225?-1274. Summa theologica. Prima secundae. Quaestio 40.
War--Moral and ethical aspects
Princeton subject headings: