Training courses in safety and hygiene in the building trades. 
Issued by the Federal board for vocational education, Washington. May, 1919. 
 - Washington,  Govt. print. off.,  1919. 
 - 128 p.  front., illus., diagrs.  23 cm. 
 - Bulletin  no. 31. Trade and industrial series, no. 6 .
<br/><br/> Prepared by J. H. Gill, M.E., special research agent of the Federal board for vocational education.--p. 3. 
<br/><br/>With : Home economics education orgainzation and administration / United States Federal Board of Vocational Education. Washington : Govt. Print. Off., 1919. Bound together subsequent to publication. 
<br/><br/>Bibliography: p. 125-126. 
<br/><br/><label>LCCN: </label>e  19000630  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building trades--Study and teaching.
<br/><br/><label>LC Class. No.: </label>LC1045  / .A25 no. 31