1. Evaluation in health education;Hastings;J Sch Health,1970
2. An evaluation of a grade one dental health program;Gray;Can J Pub Health,1968
3. Children's preventive visits to the dentist: the relative importance of socio-economic factors and parents preventive visits;Metz;J Am Coll Dent,1967
4. 4. Downer MC : Dental Health Education - Let's Start It Working. Paper prepared for the Salford Area Health Authority, U.K., April, 1975.
5. Dental hygiene and socio-economic status;Rayner;I.A.D.R.,1969