APLET yearbook of educational and instructional technology 1974/75  / 
editors Anne Howe and A. J. Romiszowski 
 - London :  Kogan Page,  1974 
 - 415 p. :  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>0850382505 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology<br/>Programmed instruction