Columbia subject headings:
Buber, Martin, 1878-1965.
Existentialism.
Sartre, Jean-Paul, 1905-1980.
Harvard subject headings:
Buber, Martin, 1878-1965
Existentialism.
Sartre, Jean-Paul, 1905-1980
Princeton subject headings:
Buber, Martin, 1878-1965.
Existentialism.
Sartre, Jean-Paul, 1905-1980.