TY - BOOK AU - Mager,Robert Frank AU - Beach,Kenneth M TI - Developing vocational instruction SN - 0822420600 AV - LC1043 MAG PY - 1967/// CY - Belmont, Calif. PB - Lear Sigler/Fearon KW - Vocational education KW - Study and teaching N1 - Includes bibliographical references ER -