Ayres, Robert U. <br/><br/>
Technological forecasting and long-range planning / 
Robert U. Ayres. 
 - New York :  McGraw-Hill Book Company,  1969. 
 - xv, 237 p. :  illus. ;  24 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technological forecasting