Aspects of educational Technology IV / 
Edited by A.C.Bajpai and J.F.Leedham 
 - London :  Pitman,  1970 
 - 518 p. :  illus 
<br/><br/><label>ISBN: </label>0273314106 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology.
<br/><br/><label>Dewey Class. No.: </label>371.307  / B165A