Allen, James <br/><br/>
Natural language understanding / 
Allen, James. 
 - 2nd ed 
 - New Delhi:  Pearson education,  2007. 
 - xv,654p.24cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>8131708950 
<br/><br/><label>Dewey Class. No.: </label>006.35 ALL