Mager, Robert Frank 1923- Developing vocational instruction / [textbook] by Robert F. Mager and Kenneth M. Beach, Jr - Belmont, Calif. : Lear Sigler/Fearon, 1967. - x, 83 pages : 22 cm Includes bibliographical references. ISBN: 0822420600 Subjects--Topical Terms: Vocational education--Study and teaching LC Class. No.: LC1043 / MAG