Harper, William Massie <br/><br/>
Operational research / 
W. M. Harper 
 - London  Macdonald and Evans  1975 
 - xv, 301p.  ill.  19cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0712115145  RM14.62 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operations research