1. Some observations on dental disease in the dog;Wright;Vet Rec,1939
2. Dental caries in domesticated dogs;Gardner;J Am Vet Med Assoc,1962
3. Periodontal disease in dogs. I. Clinical investigation;Gad;J Periodont Res,1968
4. Hull PS. Periodontal disease in the beagle dog and its use as a research modelx MDS thesis Victoria University of Manchester 1973
5. Periodontal disease in a beagle dog colony;Hull;J Comp Pathol,1974