1. United States life tables by dentulous or edentulous conditions, 1971 and 1957–1958;National Center For Health Statistics;Vital Health Statistics, Series 2 No. 64,1974
2. 1970 Census of population;U.S. Department of Commerce Bureau of the Census,1973
3. The effect of denture wearing on facial morphology: a seven year longitudinal study;Tallgren;Acta Odontol Scand,1967
4. Clinical, cephalometric, and densitometric study of reduction of residual ridges;Atwood;J Prosthet Dent,1971
5. The reduction of residual ridges: a major oral disease entity;Atwood;J Prosthet Dent,1971