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2. Twenty-five Years' Experience With the Zygomatic Method;Berger;Am. J. Orthodontics,1952
3. Berger, H.: Constitutional Approach to Differential Diagnosis, Transactions of European Orthodontic Society for 1955 (reprint, 16 pages).
4. The Hard Palate in Normal and Feeble-Minded Individuals;Channing;Anthrop. Papers Am. Mus. Nat. Hist.,1908
5. Width of the Dental Arches at the Deciduous Canines in White Children 4 to 8 Years of Age;Holcomb;Growth,1956