Gazdar, Gerald. <br/><br/>
Natural language processing in Prolog :  an introduction to computational linguistics / 
Gerald Gazdar and Chris Mellish. 
 - Wokingham, England :  Addison-Wesley,  1989. 
 - xv, 504 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0201180537 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Prolog(Computer program language.)<br/>computational lingistics.