Grogan, Denis Joseph <br/><br/>
Case studies in reference work / 
by Denis Joseph Grogan 
 - London :  Clive Bingley,  1967 
 - 166 p. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0851570046 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries)--Case studies