Hornby,A.S <br/><br/>
Oxford Advanced Learnr's Dictionary of Current English 

 - New York  OXFORD  Unirersity Press  2013 
 - p.1787 
<br/><br/><label>ISBN: </label>9780194799102 
<br/><br/><label>Subjects--Topical Terms: </label> Numbers  Key to Dictionary Entries  Abbreviations,Symbols and labels used in the dictionary 
<br/><br/><label>Dewey Class. No.: </label>423 T88O