Columbia subject headings:
Church--History of doctrines--Middle Ages, 600-1500.
Thomas, Aquinas, Saint, 1225?-1274.
Harvard subject headings:
Church--History of doctrines--Middle Ages, 600-1500
Thomas, Aquinas, Saint, 1225?-1274
Princeton subject headings:
Church--History of doctrines--Middle Ages, 600-1500.
Thomas, Aquinas, Saint, 1225?-1274.