Columbia subject headings:
Metaphysics--History.
Metaphysics.
Thomas, Aquinas, Saint, 1225?-1274.
Harvard subject headings:
Metaphysics--History
Metaphysics--History--To 1500.
Thomas, Aquinas, Saint, 1225?-1274
Thomas, Aquinas, Saint, 1225?-1274--Metaphysics.
Princeton subject headings:
Metaphysics--History.
Thomas, Aquinas, Saint, 1225?-1274--Metaphysics.