TY  - BOOK
AU  - Mager,Robert F.
TI  - Making instruction work or skillbloomers
SN  - 0822444674
U1  - LB/3051 
PY  - 1988///
CY  - California
PB  - David S. Lake Publishers.
KW  - Educational tests and measurements.
KW  - Programmed instruction
ER  -