[Pittsburgh, PA] : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, [1997]
Title from title screen (viewed on Mar. 7, 2008). "July 1997."
Technical Details
Mode of access: Internet from the CDC web site. Address as of 03/07/08: http://www.cdc.gov/niosh/mining/pubs/pdfs/462.pdf; current access available via PURL.
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