1. Trace metal poisoning;Louria,1985
2. Posterior composite resin dental restorative materials;Vanherle;Minnesota Mining and Manufacturing,1985
3. Clinical use of some dental materials. Amalgams;Rupp;J Indiana Dent Assoc,1973
4. Survey;Bureau of Economic and Behavioral Research,1979
5. The toxicity of mercury in dental amalgams;Bauer;CDA J,1982