1. Personal communication;US Public Health Service, Division of Dental Health, Community Fluoridation Section,1964
2. Dental effects of accidentally fluorinated water: I. Dental caries experience in deciduous and permanent teeth of school age children;Klein;JADA,1948
3. Effect of part-time exposure to natural water-borne fluorides on the incidence of dental caries;Yacovone;Arch. Oral Biol.,1960
4. Ten years of fluoridation in Ely, Minnesota;Jordan;North-West Den.,1962
5. Effect of fluoridated water in schools upon dental caries susceptibility;Creighton;Pub. Health,1964