Doff, Adrian <br/><br/>
Language in use : upper intermediate self-study workbook with answer key 

 - New Delhi  Cambridge University Press  2004 
 - xxvi, 389p.  
<br/><br/><label>ISBN: </label>9788175962248 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language -- usage