REFERENCES
- U.S. Department of Labor (USDOL), Occupational Safety and Health Administration (OSHA) . 1994 . “ OSHA Instruction CPL 2.103 ” . In The Field Inspection Reference Manual (FIRM) , Washington, D.C. : USDOL, OSHA .
- U.S. Department of Labor (USDOL), Occupational Safety and Health Administration (OSHA) . 1993 . “ OSHA Instruction CPL 2-2.20B CH-1 ” . In The OSHA Technical Manual , Washington, D.C. : USDOL, OSHA .
- U.S. Department of Labor (USDOL), Occupational Safety and Health Administration (OSHA) . 1991 . “ OSHA Instruction C L 2-243A ” . In The Chemical Information Manual , Washington, D.C. : USDOL, OSHA .
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