Dewey, Melvil  . <br/><br/>
Dewey decimal classification and relative Index /  
Devised by Melvil Dewey. 
 - 23rd ed /  
 - Dublin, Ohio :   Online Computer Library Center ,   2011 
 - 4 vols :  
<br/><br/><label>ISBN: </label>978-1-910608-80-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Dewey decimal
<br/><br/><label>Dewey Class. No.: </label>2:12  / Q1.4;7