by Occupational exposure to chromium (VI).
Publication & Distribution:
[Cincinnati?] . U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health, [Office of Research and Standards Development] ;$aWashington . For sale by the Supt. of Docs., U.S. G.P.O., (c)1975 [i.e. 1976]