Lemen, R. (1976). Revised recommended asbestos standard. U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health ; For sale by the Supt. of Docs., U.S. G.P.O..
Lua i Stíl Chicago (17ú heag.)Lemen, Richard. Revised Recommended Asbestos Standard. Cincinnati, Ohio : Washington, D.C.: U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health ; For sale by the Supt. of Docs., U.S. G.P.O., 1976.
Lua MLA (8ú heag.)Lemen, Richard. Revised Recommended Asbestos Standard. U.S. Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health ; For sale by the Supt. of Docs., U.S. G.P.O., 1976.