Tense time :  extension material in spoken English ; edited by Patricia Ahrens. 

 - [London]:   Longman,   1977.  
 - 68 p. :  ill. ;  24 cm. 
<br/><br/> Developed from materials written and used by the staff of the British Council's English Language Teaching Institute 
<br/><br/><label>ISBN: </label>058255361X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Study and teaching--Foreign speakers<br/>Αγγλική γλώσσα--Διδακτικά βιβλία για ξένους
<br/><br/><label>Dewey Class. No.: </label>428.24071