TY  - BOOK
AU  - Mager,Robert F.
TI  - Preparing instructional objectives : : a critical tool in the development of effective instruction
SN  - 1879618036
U1  - 371.3944 23
PY  - 1997///
CY  - [Carefree, Arizona] : 
PB  - [publisher not identified] , 
KW  - Programmed instruction
N1  - Includes index
ER  -