Orr, William D <br/><br/>
Conversational computers 
/ William D. Orr 
 - New York  John Willey& Sons  c1968 
 - xv, 227 p. :  ill. ;  22 cm 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>NA  TZS 20,000/= 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer systems
<br/><br/><label>Dewey Class. No.: </label>621.3819