Guestimates

Small B.W. , Murray J.J. Enamel opacities: prevalence, classifications and aetiological considerations. J Dent 1978; 6: 33–42

McLean I. , Anderson C.M. , White C. The accuracy of guestimates. J R Soc Med 2003; 96: 497–8

British Society of Paediatric Dentistry. A policy document on fluoride supplements and fluoride toothpaste for children. Int J Paediatr Dent 1996; 6: 39–142

Kelvin W.T. Popular Lectures and Addresses [1891-1894]. London: Macmillan