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References
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: Epidemiologic Studies in Dental Caries. VI. A Review of Intrinsic Factors as They May Affect Caries Progression , J. Pediat . 44 : 578 , 1954 .
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, and
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: McClung's Handbook of Microscopical Technique , ed. 3 , New York , 1950 , Paul B. Hoeber, Inc. , chapt. 10.
