Sumner, W, L <br/><br/>
Visual Methods in Education 

 - Oxford :  Basil Blackwell,  1956. 
 - 231p.;  20cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School Education
<br/><br/><label>Dewey Class. No.: </label>371.335  / SUM