00655cam a2200217 4500 91733224 TxAuBib 20061207120000.0 060616s2006||||||||||||||||||||||||eng|u 18603 Project Gutenberg PGUSA eng TxAuBib Sumner, William Graham. What Social Classes Owe to Each Other [Gutenberg] / by William Graham, 1840-1910 Sumner. Project Gutenberg, 2006. Project Gutenberg. Freely available. Electronic text. Economics. Social ethics. http://www.gutenberg.org/license Rights TXTLL