A conceptual framework for occupational health surveillance
By: Robert Spirtas ...[et al.].
Contributors: National Institute for Occupational Safety and Health. Division of Surveillance, Hazard Evaluations, and Field Studies.
Series: DHEW publication -- no. (NIOSH) 78-135; NIOSH research report
Publisher: U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health
Place of publication: Cincinnati, OH