Smith, Hayden Richard, 1915- <br/><br/>
Instructional media in the learning process 
Hayden R. Smith, Thomas S. Nagel 
 - Columbus  Charles E. Merrill Publishing Co.  1972 
 - 120 p. : ill. ; 26 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0675091640 
<br/><br/><label>LCCN: </label>71-173766 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching--Aids and devices<br/>Audio--visual education