Dewey decimal classification and relative index 

 - 20nd ed. 
 - Ohio:   Online Computer Center, Inc.,  1989 
 - lxi, 514p. 
<br/><br/>Vol.1 (Introduction,Tables); ISBN:978-1-910608-38-5, lxi, 514p.<br/>Vol.2 (Schedules 000-599); ISBN:978-1-910608-39-3, 944p.<br/>Vol.3 (Schedules 600-999); ISBN:978-1-910608-40-7, 864p.<br/>Vol.4 (Relative Index); ISBN:978-1-910608-41-5, 961p. 
<br/><br/><label>ISBN: </label>0-910608-37-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library classification
<br/><br/><label>Subjects--Index Terms: </label>Decimal classification 
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.45DC   / L1;M9.1