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Occupational exposure to respirable coal mine dust

Cincinnati, Ohio : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Education and Information Division ; Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O., [1995] 1995

Occupational exposure to respirable coal mine dust

Cincinnati, Ohio : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Education and Information Division ; Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O., [1995] 1995