TY  - BOOK
AU  - Sasieni, Maurice
AU  - Yaspen, Arthur
AU  - Friedman, Lawrence
TI  - Operations  research : methods and problems
U1  - 658.403 4 
PY  - 1959///
CY  - New York
PB  - John Wiley and Sons, Inc.
KW  - Operations research
ER  -