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Adler, Howard , Klein, George, and Lindsay , F.K.: Removal of Fluorides From Potable Waters by Tricalcium Phosphate, Indust. & Engin. Chem. 30: 163-165, 1938.
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Armstrong, W.D. , and Brekhus, P.J.: Possible Relationship Between the Fluorine Content of Enamel and Resistance to Dental Caries, J. D. Res . 17: 393-399, 1938.
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Volker, J.F. , Hodge, H.C., Wilson, H.J., and Van Voorhis , S.N.: The Adsorption of Fluorides by Enamel, Dentin, Bone and Hydroxyapatite as Shown by the Use of the Radioactive Isotope, J. Biol. Chem. 135: 543-548, 1940.
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Norvold, R.W. , Inglis, J.H., and Armstrong , W.D.: External Acquisition of Fluorine by Enamel, J. D. Res. 20: 232-233, 1941.
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Bibby, B.G.: Effectiveness of Various Fluoride Preparations in Reducing Tooth Solubility , J. D. Res. 23: 202-203, 1944.
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Bibby, B.G.: Use of Fluorine in Prevention of Dental Caries. III. A Consideration of the Effectiveness of Various Fluoride Mixtures, J. A. D. A. 34: 26-32, 1947.
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Phillips, R.W. , and Muhler, J.C.: Solubility of Enamel as Affected by Fluorides of Varying pH, J. D. Res. 26: 109-117, 1947.
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Buonocore, M.G. , and Bibby, B.G.: The Effects of Various Ions on Enamel Solubility , J. D. Res. 24: 103-108, 1945.
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Muhler, J.C., and Van Huysen, G.: Solubility of Enamel Protected by Sodium Fluoride and Other Compounds, J. D. Res. 26: 119-127, 1947.
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Cox, G.J. , Matuschak, M.C., Dixon, S.F., Dodds, M.L., and Walker, W.E.: Experimental Dental Caries. IV. Fluorine and Its Relation to Dental Caries, J. D. Res. 18: 481-490, 1939.
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Gerould, C.H. : Electron Microscope Study of the Mechanism of Fluorine Deposition in Teeth, J. D. Res. 24: 223-233, 1945.
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Rae, J.J. , and Clegg, C.T.: The Effect of Sodium Fluoride on the Solubility of Calcium Phosphate, Tooth Enamel and Whole Teeth in Lactic Acid, J. D. Res. 24: 235-237, 1945.
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Sognnaes, R.F. : Effect of Local and Systemic Fluorine-Administration on Experimental Rat Caries, J. D. Res. 19: 287, 1940.
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Sognnaes, R.F. : Effect of Topical Fluorine Application on Experimental Rat Caries, Brit. Dent. J. 70: 433-437, 1941.
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Keyes, P.H. : Dental Caries in the Syrian Hamster. III. The Effect of Topical NaF and Urea Applications on Caries Activity, J. D. Res. 25: 469-473, 1946.
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Gilliam, A.G. , and Onstott, R.H.: Results of Field Studies With the Brodie Poliomyelitis Vaccine, Pub. Health Rep. 51: 160-171, 1936.
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Bibby, B.G. : New Approach to Caries Prophylaxis, Tufts Dent . Outlook15: 4-8, 1942.
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Knutson, J.W. , and Armstrong, W.D.: The Effect of Topically Applied Sodium Fluoride on Dental Caries Experience, Pub. Health Rep. 58: 1701-1715, 1943.
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Knutson, J.W. , and Armstrong, W.D.: The Effect of Topically Applied Sodium Fluoride on Dental Caries Experience. II. Report of Findings for the Second Study Year, Pub. Health Rep. 60: 1085-1090, 1945.
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Knutson, J.W. , and Armstrong, W.D.: The Effect of Topically Applied Sodium Fluoride on Dental Caries Experience. III. Report of Findings for the Third Study Year, Pub. Health Rep. 61: 1683-1689, 1946.
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Jordan, W.S. , Wood, O.B., Allison, J.S., and Irwin, V.D.: The Effects of Various Numbers of Topical Applications of Sodium Fluoride, J.A.D.A. 33: 1385-1391, 1946.
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Knutson, J.W. , Armstrong, W.D., and Feldman, F.M.: The Effect of Topically Applied Sodium Fluoride on Dental Caries Experience. IV. Report of Findings With Two, Four and Six Applications, Pub. Health Rep. 62: 425-430, 1947.
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Galagan, D.J. , and Knutson, J.W.: The Effect of Topically Applied Fluorides on Dental Caries Experience. V. Report of Findings With Two, Four and Six Applications of Sodium Fluoride and Lead Fluoride, Pub. Health Rep. 62: 1477-1483, 1947.
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Cheyne, V.D. : Human Dental Caries and Topically Applied Fluorine: A Preliminary Report, J.A.D.A. 29: 804-807, 1942.
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Arnold, F.A. , Dean, H.T., and Singleton , D.E., Jr.: The Effect on Caries Incidence of a Single Topical Application of a Fluoride Solution to the Teeth of Young A,dult Males of a Military Population, J. D. Res. 23: 155-162, 1944.
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East, B.R., Ziskin, D.E., Stowe, L.R., Karshan, M., and Richardson, E.P. : A Study of the Topical Application of Potassium Fluoride in Caries Prevention, J. D. Res. 24: 267-268, 1945.
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McCauley, H.B. , and Dale, P.P.: Observation of Increased Caries Activity Following Interruption of Topical Fluorine Applications, J. D. Res. 24: 305-309, 1945.