Sanitation and physiology being primer of sanitation and human physiology in one volume This book, "Sanitation and physiology being primer of sanitation and human physiology in one volume", by John W. Ritchie, is a replication of a book originally published before 1920. 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.