Langfrod M <br/><br/>
Visual aids and photography in education 

 - London  Focal Press        1973 
 - 350p.  cm. 
<br/><br/><label>Standard No.: </label>86,692 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>T:31, L3