Business mathematics & statistics 
By K.K. Nag 
 - Ludhiana:  Kalyani publishers,  1987. 
 - x,422p. 
<br/><br/><label>ISBN: </label>81-7096-033-9 
<br/><br/><label>Subjects--Index Terms: </label>Commerce Business mathematics & statistics 
<br/><br/><label>Dewey Class. No.: </label>519.5