1. Newburgh-Kingston caries-fluorine study. Combined clinical and roentgenographic dental findings after ten years of fluoride experience;Ast;JADA,1956
2. Final report of local studies on water fluoridation in Brantford;Hutton;Canad J Pub Health,1956
3. Effect of fluoridated public water supplies on dental caries prevalence;Arnold;Pub Health Rep,1956
4. Report on 13 years of water fluoridation in Evanston, III;Blayney;JADA,1960
5. The relation between the fluoridation of water and dental caries experience;Backer Dirks;Int Dent J,1967