Walker, Elaine. <br/><br/>
Grammar practice for upper intermediate students :  with key / 
Elaine Walker, Steve Elsworth. 
 - New ed. 
 - Harlow :  Longman,  c2000. 
 - 204 p. :  ill. ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>058241721X (pbk.) 9780582417212 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar--Study and teaching (Secondary)
<br/><br/><label>Dewey Class. No.: </label>428.2  / WAL