References
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- Indiana Occupational Safety and Health Administration . 1996 . Health Inspection Report No. 1253355131 , Indianapolis, IN : Indiana Occupational Safety and Health Administration .
- Carley , L. W. 1995 . Technicians Guide to Automotive Emissions Systems , NY : Delmar Publishers .
- Threshold Limit Values for Chemical Substances and Physical Agents Biological Exposure Indices . American Conference of Governmental Industrial Hygienists . Cincinnati, OH : ACGIH .