Silvius, G. Harold 1908- Teaching successfully the industrial arts and vocational subjects [electronic resource] / [by] G. Harold Silvius [and] Estell H. Curry.. — Bloomington, Ill., : McKnight & McKnight, [1953]. — 339 p. : illus. 24 cm. LCCN: 53012937 Subjects--Topical Terms: Industrial arts--Study and teaching. LC Class. No.: LB1594 / .S53 Dewey Class. No.: 371.425