National Institute for Occupational Safety and Health. (1977). National occupational hazard survey volume 1: Survey manual. National Institute for Occupational Safety and Health.
Chicago Style (17th ed.) CitationNational Institute for Occupational Safety and Health. National Occupational Hazard Survey Volume 1: Survey Manual. Cincinnati, Ohio: National Institute for Occupational Safety and Health, 1977.
MLA citiranjeNational Institute for Occupational Safety and Health. National Occupational Hazard Survey Volume 1: Survey Manual. National Institute for Occupational Safety and Health, 1977.
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