Heinich, Robert. <br/><br/>
Instructional media and the new technologies of instruction / 
Robert Heinich, Michael Molenda, James D. Russell. 
 - Fourth edition 
 - xv, 463 pages :   illustrations ;  28 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>002353060x 9780023530609 
<br/><br/><label>LCCN: </label>9228702 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology.<br/>Audio-visual education.
<br/><br/><label>LC Class. No.: </label>LB1028.3  / .H45 1993 
<br/><br/><label>Dewey Class. No.: </label>371.3/07/8