TY  - BOOK
AU  - Mager,Robert F.
TI  - Preparing instructional objectives
SN  - 082245601X
PY  - 1975///
CY  - Belmont, Calif
PB  - Fearon Publishers
KW  - Programmed instruction
N1  - First ed. published in 1961 under title: Preparing objectives for programmed instruction
ER  -