Healing waters.
D001452:Balneology / Q000266:history*; D006294:Health Resorts / Q000266:history*; D049690:History, Ancient; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D049711:History, Modern 1601-; D006875:Hydrotherapy / Q000266:history*; D014481:United States