1. Surgical and Maxillofacial Prosthesis;Beder,1949
2. Congenital Clefts of Lip and Palate;Davis;J. Am. Surgery,1924
3. Congenital Deformities of the Face: Types Found in a Series of 1,000 Cases;Davis;Surg. Gynec. & Obst,1935
4. Inheritance of Harelip and Cleft Palate;Fogh-Andersen,1942
5. Cleft Palate and Harelip Incidence;Grace;J. D. Res,1943