Commercial arithmatic & elements of statistics 
By S.C. Chanda 
 - 3rd rev & enl. 
 - Ludhiana:  Kalyani publishers,  2000. 
 - x,378p. 
<br/><br/><label>ISBN: </label>81-7663-549-9 
<br/><br/><label>Subjects--Index Terms: </label>Arithmetic Commercial arithmatic & elements of statistics 
<br/><br/><label>Dewey Class. No.: </label>513