Grogan, Dennis. <br/><br/>
Grogan's case studies in reference work / 
Denis Grogan 
 - London :  Clive Bingley,  1987. 
 - v.[2-6] 
<br/><br/>v.2.Encyclopedias,yearbooks,directories and statistical sources;-v.3.Bibliographies of books;-v.4.Periodicals and their guides;- v.5.Dictionaries and phrase books;-v.6.Biographical sources. 
<br/><br/><label>ISBN: </label>0851574157 
<br/><br/><label>LCCN: </label>44041016 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries)