Frederick S. Mckay and the "Colorado brown stain.".
D003731:Dental Caries / Q000517:prevention & control; D003743:Dental Enamel / Q000187:drug effects; D003815:Dentists / Q000266:history; D005459:Fluorides / Q000009:adverse effects*; D009050:Fluorosis, Dental / Q000266:history*; D049673:History, 20th Century
D005459:Fluorides