Official textbooks to deepen your knowledge of public bathhouses, a complete 2-volume set. - Title: Public Bathhouse Certification Official Textbook 1 - Title: Public Bathhouse Certification Official Textbook 2 Thank you for viewing. This is a set of two books. I've only read them once, so they are in near-new condition, but please understand that there may be some minor scratches due to being stored by a private individual. Please check the condition in the photos, and no claims or returns are accepted.