David, Mary T. <br/><br/>
English for Special Purposes Written and Spoken English for Academic Purposes / 
by Mary T. David  
 - Chennai:   B.I. Publications,   1999 
 - p.57 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Language | <br/>English Language<br/>Grammar, English
<br/><br/><label>Dewey Class. No.: </label>425  / DAV-E