Allen, W. Stannard.  <br/><br/>
Living English structure :   key to the exercises / 
W. Stannard Allen. 
 - London :  Orient Longman,  1993. 
 - 26 pages ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Textbooks for foreign speakers.<br/>English language--Problems, exercises, etc.--Grammar
<br/><br/><label>Dewey Class. No.: </label>425 ALL