Matthews, Alan <br/><br/>
Tandem : communicative practice materials for post-elementary & intermediate students of english 

 - London  Evans Brothers  1981 
 - 2 v. : ilus., cuad 
<br/><br/> Available: Teacher's notes 
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label>0-237-50677-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>/LINGUISTICA/INGLES-USO; EXPRESION ORAL/REVISADO/