Hills, Philip <br/><br/>
The spread of educational technology / 
edited for the Association for Programmed Learning and Educational Technology by Philip Hills and John Gilbert; general editor R. E. B. Budgett. 
 - London :  Kogan Page,  1977. 
 - xi, 429 p. 
 - Aspects of Educational Technology; vol. xi .
<br/><br/>Vols. xii : Educational technology in a changing world. xiv : Educational technology to the year 2000. xv : Distance learning and evaluation. xviii : New directions in education and training technology. xix : Educational,training and information technologies-economics and other realities. xx : Flexible learning systems. 
<br/><br/><label>ISBN: </label>0850380936 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational Technology