Educational technology :  a glossary of terms / 
By AECT Task Force on Definition and Terminology 
 - Washington, D.C.  Association for Educational Communications and Technology  1979 
 - 371 p. ;  23 cm. 
<br/><br/> 'The first ten chapters ... were published previously as part B of Educational Technology : definition and glossary of terms ... 1977' 
<br/><br/><label>ISBN: </label>0892400072 
<br/><br/><label>LCCN: </label>79-53125 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology