Longman essential activator  put your ideas into words 

 - Harlow  Addison Wesley  1997 
 - vii,997 p.  Illustration 
<br/><br/><label>ISBN: </label>8178080125 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LANGUAGES
<br/><br/><label>Universal Decimal Class. No.: </label>81.373  / LON