Harper, W. M.  <br/><br/>
Operational research 
W. M. Harper 
 - Estover:  Macdonald and Evans,  1975. 
 - 301p. 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0712115145 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operations research
<br/><br/><label>Dewey Class. No.: </label>658.4034  / HAO