Business statistics 
By N.K. Nag 
 - Ludhiana:  Kalyani publishers,  2008. 
 - x,359p. 
<br/><br/><label>ISBN: </label>978-81-272-4543-6 
<br/><br/><label>Subjects--Index Terms: </label>Probabilities & applied mathematics Business statistics 
<br/><br/><label>Dewey Class. No.: </label>519.5