Sehgal, R L <br/><br/>
Applied statistics for library science research vol.1 
by Sehgal, R L 
 - New Delhi  Ess Ess publication  1998 
<br/><br/><label>ISBN: </label>8170002362 
<br/><br/><label>Dewey Class. No.: </label>020.72 SEH/APP.2