Sewage Purification, by Theodore Phillips and Edward Schneider 59980 [Full title: Comparison of Methods of Sewage Purification] [Full author: Theodore Clifford Phillips and Edward John Schneider] [Link: http://www.gutenberg.org/5/9/9/8/59980 ] [Files: ; 59980-0.txt; 59980-h.htm] Thanks to Richard Tonsing and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Al