Patterson, William Francis Educating for industry policies and procedures of a national apprenticeship system by William F. Patterson...and M. H. Hedges... - New York, Prentice-Hall, inc. 1946. - ix,229p. incl.front.,illus.(incl.group ports.)diagr. 21cm. Bibliography: p.[153]-184. LCCN: 46006756 Subjects--Topical Terms: Apprentices--United States. LC Class. No.: HD4885.U5 / P3