REFERENCES
- U.S. Department of Labor (DOL), Occupational Safety and Health Administration (OSHA) . 1993 . OSHA Technical Manual , Washington , D.C. : USDOL-OSHA .
- U.S. Department of Labor (DOL), Occupational Safety and Health Administration (OSHA) . 1991 . Chemical Information Manual , Washington , D.C. : USDOL-OSHA .
- U.S. Department of Labor (DOL), Occupational Safety and Health Administration (OSHA) . 1994 . OSHA's Field Operations Manual (FOM) , Washington , D.C. : USDOL-OSHA .