Columbia subject headings:
Biology--Great Britain--History.
Social Darwinism.
Sociology--Great Britain--History.
Harvard subject headings:
Biology--Great Britain--History.
Social Darwinism--Great Britain--History.
Social Darwinism.
Sociology--Great Britain--History.
Princeton subject headings:
Biology--Great Britain--History.
Social Darwinism.
Sociology--Great Britain--History.