Fry, Edward Bernard,  1925- <br/><br/>
Teaching machines and programmed instruction :  an introduction / 
Edward B. Fry 
 - New York :  McGraw Hill Book Company,  1963 
 - 244 p. ;  ill. :  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmed instruction<br/>Teaching machines