Dewey, Melvil. <br/><br/>
Dewey decimal classification and relative index /  
NULL. 
 - 19 /   . 
 - NULL :   Table and figures ;   NULL  1 CD .  
<br/><br/>NULL 
<br/><br/><label>ISBN: </label> NULL (Pb) 
<br/><br/><label>Dewey Class. No.: </label>025.431  / DEW/D