Operational research  [Books]. 
P. Harrison. 
 - London  Mitchell Beazley  1983 
 - Pages: 127 
<br/><br/><label>ISBN: </label>0855334770  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>Operational research
<br/><br/><label>Dewey Class. No.: </label>T/56.6  / HAR