00573cam a2200193 4500 377030312 TxAuBib 20170330120000.0 140615s2014||||||||||||||||||||||||eng|u 45992 Project Gutenberg PGUSA eng TxAuBib Haycraft, John Berry, 1857-1922. Darwinism and Race Progress [Gutenberg] / John Berry Haycraft. Project Gutenberg, 2014. Public domain in the USA. Text. Evolution. Sociology. http://www.gutenberg.org/ebooks/45992