1. Dentistry, An Illustrated History;Ring,1985
2. Occurrence of malocclusion in attritive environment: A study of a skull sample from southwest Finland;Varrela;Scand J Dent Res,1990
3. Concerning certain structural changes which are taking place in our jaws and teeth;Keith,1924
4. Third molar eruption among rural Nigerians;Obusanya;Oral Surg,1991
5. Stone Age man's dentition;Begg;Am J Orthod,1954