Oxford English dictionary: A new English dictionary on historical principles, Vol.11: T-U 

 -  Oxford Clarendon Press, Oxford  1961 
 - 493 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Specialised English dictionaries
<br/><br/><label>Dewey Class. No.: </label>R 423.1  OXF.11