Columbia subject headings:
Christian ethics--Catholic authors.
Thomas, Aquinas, Saint, 1225?-1274--Ethics.
Thomas, Aquinas, Saint, 1225?-1274. Summa theologica. Prima secundae.
Harvard subject headings:
Christian ethics--Catholic authors
Human acts.
Mongillo, Dalmazio, 1928-2005.
Thomas, Aquinas, Saint, 1225?-1274
Princeton subject headings: