Clocksin, WF. <br/><br/>
Programming in prolog 

 - 2nd ed. 
 - Delhi: Narosa  1986 
 - xv,297p.  23 cm. 
<br/><br/><label>ISBN: </label>8185015856 
<br/><br/><label>Dewey Class. No.: </label>006.3  / CLO