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American Dental Association
brochure, pamphlet, dental health education, oral health, oral hygiene, toothbrush
Dental Hygiene | Dentistry | History of Science, Technology, and Medicine
American Dental Association. Bureau of Public Relations and Hirschfeld, Isadore, "The Why and How of Tooth Brushing (1945)" (1945). Patient Dental Health Education Brochures. 48.