Osborn, Jeanne. <br/><br/>
Dewey decimal classification, 20th edition :  a study manual / 
by Jeanne Osborn ; revised and edited by John Phillip Comaromi. 
 - 20th ed. 
 - Littleton, Colo. :  Libraries Unlimited, Inc.,  1991. 
 - xv, 303 p. 
<br/><br/> Includes bibliographical references (p. 291-299) and index.  Contents : DDC : history abd current status--The general character of DDC 20--Tables. 
<br/><br/><label>ISBN: </label>0872878708 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Dewey decimal--Evaluation--Handbooks, manuals, etc.<br/>Classification, Dewey decimal--History--Handbooks, manuals, etc.<br/>Classification--Books--Handbooks, manuals, etc.