Roray, Nelson L. **E)5129.194 Industrial arithmetic. An elementary text for boys in industrial, technical, vocational and trades schools. — Philadelphia. Blakiston & Co. [1916.] 154 pp. Illus. Plans. Diagrams. 18% cm., in 8s. |
at y as sam, (ish NH This card was printe@rat the Boston Public Library, January 12, 1917.
 Lag2 — T.r, — Arithmetic. In Englishe Technical and industrial.