00518cam a2200169 4500 377053670 TxAuBib 20170330120000.0 180811s2018||||||||||||||||||||||||eng|u 57671 Project Gutenberg PGUSA eng TxAuBib Lewis, Arthur M., (Arthur Morrow.) Evolution Social and Organic [Gutenberg] / Arthur M. Lewis. Project Gutenberg, 2018. Public domain in the USA. Text. http://www.gutenberg.org/ebooks/57671