Columbia subject headings:
Harvard subject headings:
Carnap, Rudolf, 1891-1970
Heidegger, Martin, 1889-1976
Sartre, Jean-Paul, 1905-1980
Wittgenstein, Ludwig, 1889-1951
Princeton subject headings:
Carnap, Rudolf, 1891-1970.
Heidegger, Martin, 1889-1976.
Sartre, Jean-Paul, 1905-1980.
Wittgenstein, Ludwig, 1889-1951.