Gupta , C.B. and Gupta , Vijey <br/><br/>
Statistical Methods 

 - Delhi  Vikas Pub. House  1983 
 - 776p. 
<br/><br/><label>ISBN: </label>0-7069-2241-1 
<br/><br/><label>Dewey Class. No.: </label>519.5   Gup.M3