SMITH, F A Fluoride removal by powdered dental enamel from solutions of stannous or of sodium fluoride. [electronic resource] - Nature Dec 1957 - 1421-2 p. digital Publication Type: Journal Article ISSN: 0028-0836 Standard No.: 10.1038/1801421a0 doi Subjects--Topical Terms: Dental EnamelFluoridesHumansPhosphatesSodium FluorideSolutions