Orr, William D  <br/><br/>
Conversational computers 

 - London:   John Wiley & Sons, Inc.,   1968 
 - xviii, 227p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer
<br/><br/><label>Subjects--Index Terms: </label>Education 
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.32(08)  / K8