OWLER, L.W. J. <br/><br/>
Wheldon's Costing Simplified. 

 - 4th Ed. 
 - London,  Macdonald & Evans,  1970. 
 - x, 302p.:Ill.; figures & picture  Index  22cm 
<br/><br/><label>ISBN: </label>7121 0328 7 
<br/><br/><label>Dewey Class. No.: </label>657.42 OWL