A manual of personal hygiene proper living upon a physiological basis This book, "A manual of personal hygiene proper living upon a physiological basis", by Walter Lytle Pyle, is a replication of a book originally published before 1917. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.