Case, Doug <br/><br/>
Off-stage! :  sketches from the english teaching theatre / 
Doug Case and Ken Wilson ; photographs by Richard Gibb. 
 - London :  Heinemann Educational Books,  1979. 
 - 144 p. :  il. 
<br/><br/> "Teacher's edition" 
<br/><br/><label>ISBN: </label>0435280333 
<br/><br/><label>Encabezamiento--Tema: </label><br/>Inglés--Estudio y enseñanza