Epidemiologic research--1964-1967.
D002971:Cleft Lip; D002972:Cleft Palate; D004245:DMF Index; D003731:Dental Caries / Q000517:prevention & control*; D004812:Epidemiologic Methods; D005457:Fluoridation; D006801:Humans; D007569:Jaw Abnormalities; D008310:Malocclusion / Q000175:diagnosis; D010510:Periodontal Diseases; D010512:Periodontal Index; D012106:Research