Dewey decimal classification and relative index 
Dewey, Melvil. 
 - 23rd edition. 
 -  OCLC Online Computer Library Center, Inc.  2011 
 - xvi, 1291 pages 
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<br/><br/><label>ISBN: </label>978-1-910608-76-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Dewey decimal.
<br/><br/><label>Dewey Class. No.: </label>LS 025.431 D5191 2011