TY  - BOOK
AU  - Martin, E Wainright 
AU  - Hermanson, Roger H.  coordinating editor
TI  - Programmed learning aid for linear programming / 
T2  - Irwin PLAID series
SN  - 0256015945 
U1  - 519.72  23 
PY  - 1969///
CY  - Homewood, Ill.
PB  - Learning Systems, 
KW  - Linear programming
KW  - Programmed instruction
ER  -