Owler.L.W.J <br/><br/>
Wheldon's Costing Simplified / 
L.W.J Owler & J.L Brown 
 - 6th ed. 
 - Plymouth . :  Macdonald & Evans Ltd ,  c1985. 
 - ix, 372p . :  ill . ;  23cm. 
<br/><br/> Includes Index. 
<br/><br/><label>ISBN: </label>0712106804 
<br/><br/><label>LC Class. No.: </label>HF5686  / .C8.O85 1985