Kelly, William A <br/><br/>
Educational psychology 

 - 4.ed. revised 
 - Milwaukee :  The Bruce publishing Co.,  1956 
 - xxiii, 574p.;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psicología pedagógica
<br/><br/><label>Universal Decimal Class. No.: </label>37.015.3