Psacharopoulos, George. <br/><br/>
Achievement evaluation of Colombia's Escuela Nueva :  is multigrade the answer / 
George Psacharopoulos C. Rojas and Edwardo Velez. 
 - Washington, DC :  World Bank,  1992. 
 - 21 p. :  ill. ;  28 cm. 
 - Policy research working papers; human resources .
<br/><br/> Open. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Colombia--Costs.<br/>Educational evaluation--Colombia.