Dewey, Melvil. <br/><br/>
Dewey decimal classification and relative index / 
Melvil Dewey. 
 - 20th ed. 
 - New York:  Oclc,  1989. 
 - 1 v. (unpaged) 
 - Index and manual in 1. .
<br/><br/> Hardcover. 
<br/><br/><label>ISBN: </label>0910608415 9780910608411 
<br/><br/><label>Dewey Class. No.: </label>025.431  /  DED