Erickson, Carlton W.H. <br/><br/>
Administering audio-visual services 
by Carlton W.H. Erickson 
 - New York  Macmillan  1959 
 - 479p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual education
<br/><br/><label>Dewey Class. No.: </label>P141 Er44