Richards, Jack C <br/><br/>
Full contact : interchange. Intro. part. 2, units 5-8 
Jack C Richards 
 - Cambridge  Cambridge University Press  2008 
 - vii.48p 
<br/><br/><label>ISBN: </label>9780521730914 
<br/><br/><label>Dewey Class. No.: </label>428.0076 RIC