Dewey Decimal Classification :  a practical guide / 

 - 2nd ed., rev. for DDC 21. 
 - Albany, N.Y. :  Forest Press,  1996. 
 - xvi, 246 p. ; 
<br/><br/><label>ISBN: </label>0910608555 (alk. paper) 
<br/><br/><label>Dewey Class. No.: </label>025.431  / DEW