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

 - 5th ed 
 - Prentice-Hall of India Private Limited ,  New Delhi  1986 
 - x,774 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>545  / Day/Und