Ranganathan,S R  <br/><br/>
Reference Service  
/ by S R Ranganathan 
 - 2nd ed. 
 - New Delhi:   UBS Publishers Distributors Ltd,   1989.  
 - 432p.  
<br/><br/><label>ISBN: </label>8185273219 
<br/><br/><label>Dewey Class. No.: </label>025.52  / RAN/R