Powell, Debra. <br/><br/>
Grammar practice for upper intermediate students :  with key / 
Debra Powell with Elaine Walker and Steve Elsworth. 
 - Harlow [England] :  Pearson/Longman,  c2008. 
 - 224 p. :  ill. ;  26 cm. +  1 CD-ROM (4 3/4 in.) 
<br/><br/><label>ISBN: </label>9781405853002 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Sound recordings for foreign speakers.<br/>English language--Textbooks for foreign speakers.<br/>English language--Grammar.<br/>English language--Grammar--Problems, exercises, etc.