Multinational Exchange Mechanisms of Educational Audio visual Materials 

 - France:  United nations Educational, Science and Cultural Organization,  1975. 
 - 130p.;  29cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching aids, equipment, materials
<br/><br/><label>Dewey Class. No.: </label>371.33  / MUL