Cowen, Robert <br/><br/>
International yearbook of eduction, volume XXXIV, 1982 / 
Robert Cowen. 
 - Paris :  Geneva :  UNESCO ;  IBE,  1982. 
 - 159 p. ;  fig. 
<br/><br/><label>ISBN: </label>923102115X 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>OC 37 (100=20 "1982" INN