Columbia subject headings:
Heidegger, Martin, 1889-1976.
Logic.
Ontology.
Harvard subject headings:
Heidegger, Martin, 1889-1976
Heidegger, Martin, 1889-1976--Contributions in logic.
Heidegger, Martin, 1889-1976--Contributions in ontology.
Logic.
Ontology.
Princeton subject headings:
Heidegger, Martin, 1889-1976.
Logic.
Ontology.