A case for English :  language activation for intermediate and more advanced students / 
Diana Hicks... (et al.). 
 - Cambridge :  Cambridge University Press,  1979. 
 - 80 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0521222915 (student's book) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language.