Columbia subject headings:
Heidegger, Martin, 1889-1976.
Thomas, Aquinas, Saint, 1225?-1274.
Harvard subject headings:
Heidegger, Martin, 1889-1976
Thomas, Aquinas, Saint, 1225?-1274
Princeton subject headings:
Heidegger, Martin, 1889-1976.
Thomas, Aquinas, Saint, 1225?-1274.