Aspects of educational technology 
edited by A.P. Mann and C.P.Brunstrom 
 - London:  Pitman,  1969. 
 -  xv,404p.: ill. 
<br/><br/> HB 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0-273-00300-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology-Congresses
<br/><br/><label>Dewey Class. No.: </label>371.3078  / ASP