Day, R. A. & Underwood, A. L. <br/><br/>
Quantitative analysis 

 - PHI Learning, New Delhi  2009 
 - xiii, 685p 
<br/><br/><label>ISBN: </label>978-81-203-0793-3 
<br/><br/><label>Dewey Class. No.: </label>545 Day/Und