title: Can Bilharzia occur in the Delaware Water Gap?
mesh_terms: D000818:Animals; D003691:Delaware; D004463:Ecology; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D012547:Schistosoma / Q000472:pathogenicity* / Q000502:physiology; D012552:Schistosomiasis / Q000209:etiology / Q000266:history*; D012908:Snails / Q000469:parasitology*; D014330:Tropical Medicine / Q000266:history; D014876:Water Pollution