Toilet tissue.
Kravetz
Robert E
RE
D001003:Anal Canal; D049669:History, 16th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D006801:Humans; D006920:Hygiene / Q000266:history*; D010209:Paper / Q000266:history*