TY  - BOOK
AU  - CHURCHMAN CW
AU  -  ACKOOF RL
AU  -  ARNOOF EL
TI  - Introduction to operations research
U1  - B2893, J3;13 
PY  - 1957///
CY  - New York    
PB  -  John wiley&sons       
KW  -  Mathematics
KW  - Operation research
ER  -