TY  - BOOK
AU  - Snover Stephen L
AU  -  Spikell Mark A
TI  - How to program your programmable calculator
U1  - X:(D6,9(B), L9 
PY  - 1979///
CY  - New Jersey 
PB  - Prentice Hall        
KW  - Operations Rersearch Economics
ER  -