01247cam a22002651 4500 e 19000630 DLC 20260227111210.0 800505s1919 dcua b f000 0 eng c e 19000630 (OCoLC)6282964 Library, U.S. Bur. of Education OCl DLC premarc LC1045 .A25 no. 31 United States. Federal Board for Vocational Education. 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 Prepared by J. H. Gill, M.E., special research agent of the Federal board for vocational education.--p. 3. With : Home economics education orgainzation and administration / United States Federal Board of Vocational Education. Washington : Govt. Print. Off., 1919. Bound together subsequent to publication. DLC Bibliography: p. 125-126. Building trades Study and teaching. Gill, James Herbert, 1867- 20323 20323