Aspects of educational technology / 
general editor A. J. Trott. 
 - London :  Kogan Page,  (1977- 
 - vols. 
<br/><br/>V.xi:The spread of educational technology,V.xii:Educational technology in a changing world,V.xiv:Educational technology to the year 2000,V.xv:Distance learning and evaluation,V.xviii:New directions in education and training technology,V.xix:Educational,training and information technologies-economics and other realities,V.xx:Flexible learning systems. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational Technology--Educational innovations.