Dept. of Labor, Occupational Safety and Health Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off.,
United States. Occupational Safety and Health Administration.
National Academy of Sciences (U.S.)
National Research Council (U.S.). Committee on Public Information in the Prevention of Occupational Cancer.
U.S. Department of Labor, Occupational Safety and Health Administration, Committee on Public Information in the Prevention of Occupational Cancer, Division of Medical Sciences, National Research Council, National Academy of Sciences.