Langdon, Danny G. <br/><br/>
The audio-workbook 
Danny G. Langdon. 
 - Englewood Cliffs, N.J.  Educational Technology Publications  c1978. 
 - ix, 59 p.  24 cm. 
 - The Instructional design library  v. 5 .
<br/><br/>Bibliography: p. 61. 
<br/><br/><label>ISBN: </label>0877781095 
<br/><br/><label>LCCN: </label>77025109  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audiovisual education.
<br/><br/><label>LC Class. No.: </label>LB1043  / .L28 
<br/><br/><label>Dewey Class. No.: </label>371.33/3