De,  Sourendra Nath ,  1999, <br/><br/>
Bisiness mathematics and statistics 
by Sourendra Nath De 
 - 3rd ed. 
 - Kolkata:  Chaya Prakashani,  1999. 
 - 699p.:  21cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>BUSINESS MATHEMATICS.
<br/><br/><label>Dewey Class. No.: </label>519.5  / DE