American Dental Association 1918-1928.
D000571:American Dental Association / Q000266:history*; D003365:Costs and Cost Analysis; D003729:Dental Care / Q000191:economics; D006267:Health Education, Dental / Q000266:history; D006665:History of Dentistry; D049673:History, 20th Century; D008885:Military Dentistry / Q000266:history; D009316:National Institutes of Health (U.S.); D012575:Schools, Dental / Q000266:history; D014481:United States