OWLER,L.W.J. <br/><br/>
Wheldon's costing simplified 

 - 6th Ed 
 - London  Pitman publishing  1985 
 - 372p. 
<br/><br/><label>ISBN: </label>0-273-02765-4 
<br/><br/><label>Dewey Class. No.: </label>657.42