1. Dental obsolescence: New England Dental Reports;Dale;Bull Acad Gen Dent,1968
2. State dentist manpower reports 1965–1967;Johnson,1970
3. Scottish television medical programmes: a preliminary assessment;Bell;Scot Med J,1966
4. Continuing education for dentists using open circuit television;Drinnan;NY State Dent J,1969
5. Continuing medical education through television;Meighan;JAMA,1967