Hayes-Roth, Frederick, <br/><br/>
Matching and abstraction in knowledge systems / 
Frederick Hayes-Roth   
 - pages ;  28 cm. 
 - The Rand paper series;  P-6440 .
 - The Rand paper series;  P-6440  .
<br/><br/>Includes bibliographical references (page 37) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Artificial intelligence. <br/>Cognition