Columbia subject headings:
Jaspers, Karl, 1883-1969.
Plessner, Helmuth, 1892-1985.
Political science--Germany.
Schmitt, Carl, 1888-1985.
Harvard subject headings:
Jaspers, Karl, 1883-1969
Plessner, Helmuth, 1892-
Political science--Germany
Schmitt, Carl, 1888-1985.
Princeton subject headings:
Jaspers, Karl, 1883-1969.
Plessner, Helmuth, 1892-1985.
Political science--Germany.
Schmitt, Carl, 1888-1985.