National Cancer Institute, National Institute of Environmental Health Sciences, National Institute for Occupational Safety and Health ; contributors: Kenneth Bridbord ... [and others] ; contributor to the appendix, Nicholas Day
editor, James A. Merchant ; associate editors, Brian A. Boehlecke, Geoffrey Taylor ; technical editor, Molly Pickett-Harner ; Division of Respiratory Disease Studies, Appalachian Laboratory for Occupational Safety and Health