Harper, W.H. <br/><br/>
Operational research  
<label>/ by </label> Harper, W.H. 
<label>;</label> Lim, H. C. 
 - 2nd ed. 
 - London  Mcdonald and Evans  1982 
 - x, 310p. 
 - The M & E Handbook series .
<br/><br/><label>ISBN: </label>0712115439 
<br/><br/><label>Dewey Class. No.: </label>658.4034  / HAR