Columbia subject headings:
Jaspers, Karl, 1883-1969.
Philosophy and religion.
Tillich, Paul, 1886-1965.
Harvard subject headings:
Jaspers, Karl, 1883-1969
Philosophy and religion.
Tillich, Paul, 1886-1965
Princeton subject headings:
Jaspers, Karl, 1883-1969.
Philosophy and religion.
Tillich, Paul, 1886-1965.