Dewey decimal classification and relative index :  Devised by Melvil dewey: Edition 20 : volume 3 - schedules 600-999 / 
edited by John P. Comaromi, Julianne Beall, Winton E. Matthews and Gregory R. New. 
 - 20th ed.  
 - Albany, New York :   Online Computer Library Center Inc (OCLC).   c1989.  
 - Vol 3. vii, 864p.  24 cm.  
<br/><br/>Vol. 1: Introduction. Tables --<br/>Vol. 2: Schedules 000-599 --<br/>Vol. 3: Schedules 600-999 --<br/>Vol. 4: Relative index. 
<br/><br/><label>ISBN: </label>0910608407 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification<br/>DDC<br/>Dewey Decimal Classification
<br/><br/><label>Dewey Class. No.: </label>025.431   / DEW