Spencer, D. H. <br/><br/>
Question tags / 
Duncan Spencer. 
 - London :  Longman for the British Council,  1970. 
 - 58 p. 
 - English language units ;  Unit 17 (Teacher's book) .
<br/><br/><label>ISBN: </label>058253898X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Study and teaching.