NIOH and NIOSH basis for an occupational health standard : chlorobenzene / Bjorn Hellman.
Imprint
[Washington, D.C.?] : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health ; Cincinnati, OH : Publications Dissemination, DSDTT, National Institute for Occupational Safety and Health, [1993]