Preliminary report of Committee on mortality from tuberculosis in dusty trades. 

 - Washington,  Govt. print. off.,  1919. 
 - 27 p.  22 cm. 
<br/><br/> At head of title: U.S. Dept. of labor. Working conditions service. 
<br/><br/><label>LCCN: </label>l  19000041  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tuberculosis--Mortality--United States.<br/>Occupational diseases--United States.<br/>Lungs--Dust diseases--United States.
<br/><br/><label>LC Class. No.: </label>RC313.A2  / N3