1. Task Force on National Health Programs;American Dental Association,1971
2. Bureau of Economic Research and Statistics. The 1965 survey of dental practice;American Dental Association;JADA,1966
3. Dental patients’ attitudes and behavior concerning prevention;O’Shea;Pub Health Rep,1968
4. Utilization of dental services;Richards,1971
5. Factors associated with preventive dental practice;Treiman,1959