Columbia subject headings:
Harvard subject headings:
Existentialism.
Heidegger, Martin, 1889-1976
Kierkegaard, Søren, 1813-1855
Princeton subject headings:
Existentialism.
Heidegger, Martin, 1889-1976--Criticism and interpretation.
Kierkegaard, Søren, 1813-1855--Criticism and interpretation.
Kierkegaard, Søren, 1813-1855--Influence.