Language activator  the worlds first production dictionary 

 - Harlow  Langman  1993 
 - 1587p.  25cm. 
<br/><br/><label>ISBN: </label>9812359699 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DICTIONARIES OF STANDERS ENGLISH
<br/><br/><label>Dewey Class. No.: </label>423  / LON