Ur, Penny <br/><br/>
Discussions that Work :  Task-centred fluency practice 

 - Cambridge  Cambridge University Press  cop. 1981 
 - 122 s.  23 cm.  2J-UrP-Dis 
 - Cambridge Handbooks for Language Teachers .
<br/><br/><label>ISBN: </label>9780521281690 521281695