Swan, Michael,  1936- <br/><br/>
Practical English usage :  diagnostic tests :  to accompany practical English usage / 
Michael Swan and David Baker 
 - 3rd ed. 
 - Oxford :  Oxford University Press,  2010 
 - vii, 191 p. ;  24 cm. +  1 ans. key 
<br/><br/><label>ISBN: </label>9780194311434 (test book) 9780194422727 (test book) 9780194422741 (test pack) 9780194312172 (ans key) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar