Columbia subject headings:
Darwin, Charles, 1809-1882--Influence.
Harvard subject headings:
Communism and science--Europe--History.
Darwin, Charles, 1809-1882--Influence.
Evolution (Biology)--Political aspects--Europe--History.
Historical materialism.
Social Darwinism--Europe--History.
Princeton subject headings:
Communism and science--Europe--History.
Darwin, Charles, 1809-1882--Influence.
Evolution (Biology)--Political aspects--Europe--History.
Historical materialism.
Social Darwinism--Europe--History.