Lenat, Douglas B. <br/><br/>
Cognitive economy / 
Douglas B. Lenat, Frederick Hayes-Roth, Philip Klahr ; prepared for the National Science Foundation. 
 - California :  Rand Corporation,  1979. 
 - ix, 46 p. ;  28 cm. 
 - A Rand note ;  N-1185-NSF .
 - Rand note ;  N-1185-NSF. .
<br/><br/>Includes bibliographical references (p.42-46) 
<br/><br/><label>ISBN: </label> Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Artificial intelligence<br/>Computer programming