Schiefelbein, Ernesto <br/><br/>
Seven strategies for improving the quality and efficiency of the education system / 
Ernesto Schiefelbein. 
 - Paris :  New York :  Rome :  UNESCO;  UNICEF;  WFP,  1990. 
 - pág. irregular.; 30 cm. fot. 
 - Notes, comments...;192 .
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.014 (7/8) =20 SCH No.192.