Ground itch and dew poison; the Rockefeller Sanitary Commission 1909-14.
D003140:Communicable Disease Control / Q000266:history*; D005197:Famous Persons; D049673:History, 20th Century; D006725:Hookworm Infections / Q000266:history* / Q000517:prevention & control; D012499:Sanitation; D012955:Societies, Medical / Q000266:history; D014481:United States