Duckworth, Michael    <br/><br/>
Grammar and practice /  
Michael Duckworth    
 - Oxford :  Oxford university Press,   1995    
 - 223p;   27 cm    
<br/><br/>Includes bibliographical reference and index    
<br/><br/><label>ISBN: </label>0194570681    
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar--Problems,exercises