TY - BOOK AU - Mager,Robert Frank TI - Preparing instructional objectives SN - 082245601X : AV - LB1028.5LB1028.5LB1028.5 .M2 1975.M33.M33 U1 - 371.3 PY - 1975/// CY - Belmont, Calif. PB - Fearon-Pitman Publishers KW - Programmed instruction N1 - First ed. published in 1961 under title: Preparing objectives for programmed instruction ER -