1. An Introduction to Physical Anthropology;Ashley Montague,1951
2. Fundamental Principles of Systematic Diagnosis of Dental Anomalies;Simon,1926
3. A Practical Treatise on the Technics and Principles of Dental Orthopedia and Prosthetic Correction of Cleft Palate;Case,1921
4. The Face and Occlusion of the Teeth in Man;Hellman;Int. J. Orthodontia,1927
5. Development of Face and Dentition in Its Application to Orthodontic Treatment;Hellman;Am. J. Orthodontics and Oral Surg.,1940