National occupational hazard survey

APA Citation

National Institute for Occupational Safety and Health. (19741977). National occupational hazard survey. Rockville, Md.: U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health, Office of Occupational Health Surveillance and Biometrics.

MLA Citation

National Institute for Occupational Safety and Health. National Occupational Hazard Survey. Rockville, Md.: U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health, Office of Occupational Health Surveillance and Biometrics, 19741977.