churchman w.g/ ackoff r.l/ arnoff l.e  <br/><br/>
introduction to operations research  
c west churchman /rusell l.agkoff/e leonard  
 - new york   john wiley son. inc   1957 
 - x,645p,ill;  
<br/><br/><label>Subjects--Topical Terms: </label><br/>operations research