Eraut, Michael, ed. <br/><br/>
International encyclopedia of educational technology 

 - Oxford  Pergamon press  1989 
 - xxii, 654p.; ill 
 - Advances in education .
<br/><br/><label>ISBN: </label>80334091 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology - encyclopedial