Wall, W. D. <br/><br/>
Constructive education for children / 
W. D. Wall. 
 - London :  Paris :  Harrap;  Unesco Press,  1975. 
 - 349 p. 
 - Studies and surveys in comparative education .
<br/><br/><label>ISBN: </label>9231011960 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>376 =20 WAL