Grogan, Denis. <br/><br/>
Grogan's case studies  in referencec work, Vol. 1 :  enquiries and the reference process / 
 Enquiries and the reference process. 
Denis Grogan. 
 - London :  Clive Bingley1987. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0851573649 (hbk)