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

 - 6th ed 
 - PHI Learning, New Delhi  1991 
 - xiii,685 
<br/><br/><label>ISBN: </label>978-81-203-0793-3 
<br/><br/><label>Dewey Class. No.: </label>545 Day/Und