[posted] Posted (#70409, Cooley) !

[ajhaines]

Vacuum cleaning systems, by M. S. Cooley                               70409
  [Subtitle: A treatise on the principles and practice of mechanical
cleaning]
  [Author: M. S. Cooley]
  [Link: https://www.gutenberg.org/7/0/4/0/70409]
  [Files: 70409-0.txt; 70409-h.htm]

Thanks to deaurider, Harry Lamé and the Online Distributed Proofreading
Team at https://www.pgdp.net (This file was produced from images generously
made available by The Internet Archive)

Regards,
Al