00941cam a22002531 4500 l 19000041 DLC 20260227111527.0 790921s1919 dcu f000 0 eng c l 19000041 (OCoLC)5396956 U.S. Dept. of labor. Libr. OCl DLC premarc RC313.A2 N3 National Tuberculosis Association. Committee on mortality from tuberculosis in dusty trades. Preliminary report of Committee on mortality from tuberculosis in dusty trades. Washington, Govt. print. off., 1919. 27 p. 22 cm. At head of title: U.S. Dept. of labor. Working conditions service. Tuberculosis Mortality United States. Occupational diseases United States. Lungs Dust diseases United States. United States. Working conditions service. 35542 35542