Heinich, Robert. <br/><br/>
Instructional media, and the new technologies of instruction / 
Ro bert Heinich, Michael Molenda, James D. Russell. 
 - New York :  Wiley,   c1982. 
 - xiv, 375 p. :  ill. ;   29 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0471368938 
<br/><br/><label>LCCN: </label>81-014630 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology.<br/>Audio-visual education.
<br/><br/><label>Dewey Class. No.: </label>371.3/07/8