REFERENCES
- U.S. Department of Labor (USDOL) . 1993 . The OSHA Technical Manual , Occupational Safety and Health Administration (OSHA):OSHAInstruction CPL 2-2.20B CH-1 Washington , D.C. : USDOL OSHA .
- U.S. Department of Health, Education, and Welfare (DHEW): Occupational Diseases, A Guide to Their Recognition . 1977 . Publication No. 77-181 Cincinnati , Ohio : Public Health Services, Center for Disease Control, National Institute of Occupational Safety and Health .
- American Conference of Governmental Industrial Hygienists (ACGIH®): Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices . Cincinnati , Ohio : ACGIH .
- Department of Health and Human Services (DHHS); Centers for Disease Control and Prevention (CDC), National Institute for Occupational Safety and Health (NIOSH) . 2005 . NIOSH Pocket Guide to Chemical Hazards , Publication No. 2005-149 Cincinnati , Ohio : DHHS, CDC, NIOSH .
- U.S. Department of Labor (DOL), Occupational Safety and Health Administration (OSHA) . 1994 . The Field Inspection Reference Manual (FIRM) , OSHA Instruction CPL 2.103 Washington , D.C. : USDOLOSHA .