Columbia subject headings:
Husserl, Edmund, 1859-1938.
Marx, Karl, 1818-1883.
Phenomenology.
Revolutions--Philosophy.
Science--Philosophy.
Harvard subject headings:
Husserl, Edmund, 1859-1938
Marx, Karl, 1818-1883
Phenomenology.
Princeton subject headings:
Husserl, Edmund, 1859-1938.
Marx, Karl, 1818-1883.
Phenomenology.
Revolutions--Philosophy.
Science--Philosophy.