| osha.gov | Occupational Safety and Health Administration (OSHA) |
| cdc.gov | US - - National Institute for Occupational Safety and Health (NIOSH) |
| acgih.org | ACGIH - Industrial Hygiene, Environmental, Occupational Health & Safety Reso |
| i-spec.com | Product Designers' on-line Guidebook to IEC 60950 |
| abih.org | American Board of Industrial Hygiene |
| nsc.org | National Safety Council Home & Community Top Page |
| astm.org | ASTM International |
| asme.org | American Society of Mechanical Engineers |
| ashrae.org | American Society of Heating, Refrigerating, and Air-Conditioning Engineers |
| asce.org | American Society of Civil Engineers [ASCE] |
| nsc.org | www.nsc.org/ |
151613