1. Orthodontic education;Ross;Am. J. Orthodont,1948
2. Orthodontic education within the scheme of dental education;Munblatt;Am. J. Orthodont,1949
3. Variation in occlusion;Heilman;D. Cosmos,1921
4. Textbook of orthodontia;Strang,1943
5. The limitations of orthodontic treatment. Parts I and II;Nance;Am. J. Orthodont,1947