Swan, Michael <br/><br/>
Practical english usage 

 - XXVII, 663P. 
<br/><br/> BIBLIOTECA: UACH-FFYL 
<br/><br/><label>ISBN: </label>0-19-431185-6 
<br/><br/><label>Dewey Class. No.: </label>428.2'4  / SWA 1980