Columbia subject headings:
Darwin, Charles, 1809-1882.
Frazer, James George, 1854-1941.
Freud, Sigmund, 1856-1939.
Marx, Karl, 1818-1883.
Harvard subject headings:
Darwin, Charles, 1809-1882
Frazer, James George, 1854-1941
Frazer, James George, 1854-1941.
Freud, Sigmund, 1856-1939
Marx, Karl, 1818-1883
Princeton subject headings:
Darwin, Charles, 1809-1882.
Frazer, James George, 1854-1941.
Freud, Sigmund, 1856-1939.
Marx, Karl, 1818-1883.