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Full-scale testing of the float dust deposition meter

Cortese, R. A., author.
Pittsburgh, PA : U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1998. 1998

Proposed Mine Safety and Health Administration rule on coal dust : hearing before a subcommittee of

United States. Congress. Senate. Committee on Appropriations. Subcommittee on Departments of Labor, Health and Human Services, Education, and Related Agencies.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2003. 2003