The Economy of Workshop Mainipulation, by J. Richards 57120 [Subtitle: A logical method of learning constructive mechanics] [Link: http://www.gutenberg.org/5/7/1/2/57120 ] [Files: ; 57120-0.txt; 57120-h.htm] Thanks to Chris Curnow, Monika M. C. 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