Silicosis prevention;  dust control in foundries. 
United States Department of labor. Frances Perkins, secretary. Division of labor standards. Verne A. Zimmer, director. 
 - Washington,  U.S. Govt. print. off.,  1939. 
 - iii, 25 p.  illus., diagrs.  23 cm. 
<br/><br/>"Selected references": p. 25. 
<br/><br/><label>LCCN: </label>l  39000104  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lungs--Dust diseases.<br/>Foundries.
<br/><br/><label>LC Class. No.: </label>HD7264  / .U6 1939a