Dewey, Melvil <br/><br/>
Decimal classification and relative index 

 - 19th ed. 
 - Usa  ; Forest Press  , 1979 
 - Various pages  , V.2 
<br/><br/><label>ISBN: </label>0910608202  2000 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ddc<br/>Library Classification<br/>Library Science
<br/><br/><label>Dewey Class. No.: </label>025.431  / DEW