Weaver, Gilbert Grimes <br/><br/>
Visual aids: their construction and use 

 - New York  D. Van Nostrand Company  1963 
 - 388p.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Visual education
<br/><br/><label>LC Class. No.: </label>LB1044.W385