Mamas,. Lawrence. <br/><br/>
IELTS :  the vocabulary files : English usage intermediate : teacher's book : level b1 / 
Lawrence Mamas, Andrew Betsis. 
 - United Kingdom :  Global ELT. 
 - 63 p. :  ill. ;  29 cm. 
 - The Council of Europe's Common European Framework .
<br/><br/> score: 4.0-4.5 - 5.0. 
<br/><br/><label>ISBN: </label>9781904663423 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--usage.