Beilby, M. H <br/><br/>
Economics and operational research 

 - London  Pitman Pub.  1975 
 - x,174 p. 
 - Topics in Operational Research Series .
<br/><br/><label>ISBN: </label>0273252135 
<br/><br/><label>Dewey Class. No.: </label>658  / BEI