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Schrenk, H. H. (Helmuth Herman), 1902- author Heimann, Harry, 1890- author Clayton, George D., author Gafafer, W. M. (William McKinley), 1896- author Wexler, Harry, 1911-1962, author
Publication:
Washington, D.C. : Federal Security Agency, Public Health Service, Bureau of State Services, Division of Industrial Hygiene, 1949