1. Oral and dental diseases;Stones,1954
2. Gray’s anatomy;Williams,1980
3. Craniofacial development;Sperber,2001
4. Nasopalatine duct and Jacobson’s organ in newborn infants;Noyes;J Dent Res,1935
5. Incisive canal cysts;Cohen;Am J Orthod Oral Surg,1941