Dale, Edgar,  1900- <br/><br/>
Building a learning environment / 
Edgar Dale 
 - Indiana :  Phi Delta Kappa Educational Foundation,  1972 
 - vii, 132 p. ;  23 cm. 
<br/><br/><label>LCCN: </label>73-185413 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Philosophy<br/>Study, Method of<br/>Curriculum planning