Principles of operations management 
Heizer, Jay. 
 - Fourth Edition. 
 -  Prentice Hall.  2001 
 - xxxi, 716 pages. 
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<br/><br/><label>ISBN: </label>0-13-027147-0 
<br/><br/><label>Dewey Class. No.: </label>658.5 H36p 2001