Nature of educational technology 
edited by V.K. Rao and R.S. Reddy  
 - New Delhi  Commonwealth Publishers  1992 
 - viii,340p.;  22cm.- 
 - World educational development series; no.6 .
<br/><br/><label>ISBN: </label>8171692281 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational Technology<br/>Teaching-Aids And Devices<br/>Educational Innovations
<br/><br/><label>Dewey Class. No.: </label>371.3028  / RAO