Gerlach, Vernon S. <br/><br/>
Teaching and media  a systematic approach 
Vernon S. Gerlach [and] Donald P. Ely. 
 - Englewood Cliffs, N.J.  Prentice-Hall  [1971] 
 - xiii, 392 p.  illus. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0138913331 
<br/><br/><label>LCCN: </label>71138476  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audiovisual education.<br/>Teaching--Aids and devices.
<br/><br/><label>LC Class. No.: </label>LB1043  / .G318 
<br/><br/><label>Dewey Class. No.: </label>371.3