A text book of costing principles / 
Norman Spencer.  
 - Nairobi :  Heinemann,   1986.  
 - xiii, 297 p. :  ill. ; 
<br/><br/><label>Subjects--Topical Terms: </label><br/>_costing 
<br/><br/><label>LC Class. No.: </label>HF 5716 .P5 1986