GUPTA, C.B. <br/><br/>
INTRODUCTION TO STATISTICAL METHODS 

 - 16th Ed. 
 - New Delhi  Vikas Publishing House Pvt. Ltd, New Delhi   1982 
<br/><br/><label>ISBN: </label>0 7069 2041 4 
<br/><br/><label>Dewey Class. No.: </label>519.5  / GUP/I