Nizel, A.E., and Bibby, B.G.: Geographic Variations in Caries Prevalence in Soldiers, J. A. D. A. 31: 1619, 1944.
2.
Nizel, A.E., and Harris, R.S.: Effect of Foods Grown in Different Areas on Prevalence of Dental Caries in Hamsters, Arch. Biochem. 26: 155, 1950.
3.
Nizel, A.E., and Harris, R.S.: The Caries-Producing Effect of Similar Foods Grown in Different Soil Areas, New EnglandJ. Med. 244: 361, 1951.
4.
Manly, R.S., and Bibby, B.G.: Substances Capable of Decreasing the Acid Solubility of Tooth Enamel, J. D. Res. 28: 160, 1949.
5.
Stephan, R.J. : In Vitro Studies of the Effects of Some Chemical Substances on the Growth of Oral Microorganism and on Their Ability to Dissolve Tooth Salts, J. D. Res. 28: 652, 1949.
6.
Dreizen, S., Spies, H.A., and Spies, T.D.: The Copper and Cobalt Levels of Human Saliva and Dental Caries Activity, J. D. Res. 31: 137, 1952.
7.
Forbes, J.C. , and Smith, J.D.: Studies on the Effect of Metallic Salts on Acid Production in Saliva, J. D. Res. 31: 129, 1952.
8.
Hodge, H.C., and Finn, S.B.: Reduction in Experimental Rat Caries By Fluorine, Proc. Soc. Exper. Biol. & Med. 42: 318, 1939.
9.
Geyer, C.F.: Vanadium, a Caries-Inhibiting Trace Element in the Syrian Hamster, J. D. Res. 32: 590, 1953.
McLure, F.J.: Observations on Induced Caries, VI. Summary Results of Various Modifications of Food and Drinking Water, J. D. Res. 27: 34, 1948.
12.
Leichester, H.M.: The Effect of Cadmium on the Production of Caries in Rats, J. D. Res. 26: 337, 1946.
13.
Johansen, E. : A System of Recording Oral Conditions and Dental Lesions in the Live Syrian Hamster, J. D. Res. 32: 578, 1953.
14.
Nizel, A.E.: The Cariogenic Properties of Similar Foodstuffs Grown in High- and Low-Caries Areas. I. The Influence of Trace Elements, Thesis, Tufts Dental School, May, 1952.
15.
Nizel, A.E. , and Harris, R.S.: Cariostatic Effects of Ashed Foodstuffs Fed in the Diets of Hamsters, J. D. Res. 32: 672, 1953.
16.
Sognnaes, R.F. , and Shaw, J.F.: Experimental Rat Caries. IV. Effect of a Natural Ash Mixture on the Caries Condueiveness of an Otherwise Purified Diet, J. D. Res. 32: 685, 1953.
17.
Keyes, P.H. : Moderate Caries Activity in Syrian Hamsters , J. D. Res. 32: 659, 1953.