Heinich, Robert. , <br/><br/>
Instructional media and the new technologies of instruction / 
Robert Heinich, Michael Molenda, James D Russel. 
 - 4th ed. 
<br/><br/><label>ISBN: </label>002353060x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology.<br/>Audio-visual education.
<br/><br/><label>LC Class. No.: </label>LB1028.3   / .H44 1993