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- United States. Bureau of Labor Statistics58
- National Institute for Occupational Safety and Health53
- International Labour Office35
- United States23
- United States. Occupational Safety and Health Administration22
- ebrary, Inc17
- United States. Congress. House. Committee on Education and Labor. Subcommittee on Labor Standards16
- United States. Congress. Office of Technology Assessment13
- United States. Public Health Service13
- Medcom, inc., production company11
- United States. Congress. House. Committee on Education and Labor. Subcommittee on Health and Safety10
- Hunter, Donald, 1898-9
- United States. Congress. Office of Technology Assessment8
- World Health Organization8
- National Institute for Occupational Safety and Health. Division of Respiratory Disease Studies7
- Pearce, Neil7
- Ramazzini, Bernardino, 1633-17147
- Levy, Barry S.6
- Morgan, W. Keith C.6
- National Industrial Conference Board6