Aspects of educational technology  
Edited by John Leedham 
 - London   Pitman publishing  1973 
 - 309p. 
<br/><br/> HB 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0273317830 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology-Congress
<br/><br/><label>Dewey Class. No.: </label>371.3078  / ASP