Columbia subject headings:
Thomas, Aquinas, Saint, 1225?-1274--Philosophy.
Thomas, Aquinas, Saint, 1225?-1274--Religion.
Harvard subject headings:
Thomas, Aquinas, Saint, 1225?-1274
Thomas, Aquinas, Saint, 1225?-1274--Philosophy.
Thomas, Aquinas, Saint, 1225?-1274--Theology.
Princeton subject headings: