1. The 1962 survey of dental practice: X. Summary. Bureau of Economic Research and Statistics;JADA,1964
2. Malocclusion in elementary school children, eastern health district;Knutson,1939
3. Orthodontic program of the Michigan State Department of Health with a new classification of occlusion for survey purposes;Moore;Am. J. Orthodont.,1948
4. Prevalence of malocclusion in children aged 14 to 18 years;Massler;Am. J. Orthodont.,1951
5. The effect of the changing dentition on masticatory function;Shiere;J. D. Res.,1952