Columbia subject headings:
Harvard subject headings:
Einstein, Albert, 1879-1955--Philosophy.
Heisenberg, Werner, 1901-1976--Philosophy.
Philosophy, Modern--20th century.
Physicists--20th century.
Russell, Bertrand, 1872-1970--Philosophy.
Princeton subject headings:
Einstein, Albert, 1879-1955--Philosophy.
Heisenberg, Werner, 1901-1976--Philosophy.
Philosophy, Modern--20th century.
Physicists--20th century.
Russell, Bertrand, 1872-1970--Philosophy.