Orr, William D. <br/><br/>
Conversational computers / 
William D. Orr 
 - New York :  John Wiley & Sons,  1968 
 - xviii, 227 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography: p. 88-89 
<br/><br/><label>LCCN: </label>68-30916 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time-sharing computer systems<br/>On--line data processing