Educational planning in the context of current development problems. volume II. 

 - Paris :  UNESCO,  1985. 
 - 397 p.  fot. 
<br/><br/><label>ISBN: </label>9280311190 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.014.5 (100) =20 PLA Vol.II.