Razik, Taher A <br/><br/>
Systems approach to teacher training and curriculum development :  thye case of developing countries / 
Taher A. Razik. 
 - Paris :  UNESCO ;  IIEP,  1972. 
 - 157 p. ;  il. 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>371.214 (-77) =20 RAI.