Columbia subject headings:
Harvard subject headings:
Philosophy, Modern--20th century.
Physics--Philosophy
Political science--Philosophy
Religion--Philosophy
Weizsäcker, Carl Friedrich, Freiherr von, 1912-2007.
Princeton subject headings:
Philosophy, Modern--20th century.
Physics--Philosophy.
Political science--Philosophy.
Religion--Philosophy.
Weizsäcker, Carl Friedrich, Freiherr von, 1912-2007.