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- [3] FLUORIDE CONTENTS OF SURFACE ENAMEL IN HIGH-FLUORIDE AND LOW-FLUORIDE AREAS STUDIED WITH A SENSITIVE PHYSICAL METHOD SCANDINAVIAN JOURNAL OF DENTAL RESEARCH, 1974, 82 (03): : 197 - 201
- [5] EFFECT OF LOW FLUORIDE CONCENTRATIONS ON ENAMEL DISSOLUTION HELVETICA ODONTOLOGICA ACTA, 1973, 17 (02): : 63 - 63