Dewey, Melvil. <br/><br/>
Dewey decimal classification and relative index  
Melvil Dewey 
 - 21th ed. 
 - New York:   OCLC,  1989. 
 - lxix, 625p.  
<br/><br/> Hardcover. 
<br/><br/><label>ISBN: </label>0910608512 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Dewey decimal
<br/><br/><label>Dewey Class. No.: </label>025.431  / DED