Columbia subject headings:
Darwin, Charles, 1809-1882--Influence.
Germany--Intellectual life.
Philosophy, German--19th century.
Social Darwinism--History.
Harvard subject headings:
Darwin, Charles, 1809-1882
Darwin, Charles, 1809-1882--Influence.
Germany--Intellectual life--19th century.
Germany--Intellectual life.
Philosophy, German--19th century.
Social Darwinism--Germany--History.
Social Darwinism--History.
Princeton subject headings:
Darwin, Charles, 1809-1882--Influence.
Germany--Intellectual life.
Philosophy, German--19th century.
Social Darwinism--History.