Rich, Elaine & Knight, Kevin <br/><br/>
Artificial intelligence 

 - 2nd ed 
 - Tata McGraw Hill, New Delhi  1991 
 - xviii,622 
<br/><br/><label>ISBN: </label>0-07-052263-4 
<br/><br/><label>Dewey Class. No.: </label>001.535 Ric/Kni