1. Natural Tooth Form and Dental Maintenance;Wheeler;J. South. Calif. State Dent. Assoc.,1963
2. Crown Morphology in Relation to Operative and Crown and Bridge Dentistry;Terkla;Ore. State Dent. J.,1955
3. Complete Crown Form and the Periodontium;Wheeler;J. Prosthet. Dent.,1961
4. Dental Anatomy and Occlusion;Kraus,1969
5. Some Aspects of the Bacteriology of Periodontal Disease;Gibbons;Int. Dent. J.,1964