1. Dentistry for Children;Brauer,1958
2. Ontogenetic development of occlusion;Broadbent,1941
3. Changes in the human face brought about by development. Intemat;Hellman;J. Orthodont. & Oral Surg.,1927
4. An introduction to growth of the human face from infancy to adulthood. Internal;Hellman;J. Orthodont. & Oral Surg.,1932
5. Studies in etiology and prevention of malocclusion; sequence of eruption of the permanent dentition;Lo;Am. J. Orthodont.,1953