Commercial mathematics and statistics 
By S.C. Chanda 
 - 5th ed. 
 - Ludhiana:  Kalyani publishers,  1989. 
 - x,401p. 
<br/><br/><label>ISBN: </label>978-93-272-1136-8 
<br/><br/><label>Subjects--Index Terms: </label>Arithmetic Commercial mathematics and statistics Commerce 
<br/><br/><label>Dewey Class. No.: </label>513