Sehgal, R.L. <br/><br/>
Applied statistics for library science Research; Vol. 1. 

 - New Delhi  Ess Ess Publications  1998 
 - 396p.  23 cm. 
<br/><br/><label>ISBN: </label>817000232X 
<br/><br/><label>Dewey Class. No.: </label>020.15195  / SEH