Loewald, Richard <br/><br/>
The Evaluation of WFP-assisted projects in education :  guidelines for educators on evaluation teams / 
by Richard Loewald. 
 - París :  New York :  UNESCO ;  UNICEF,  1981. 
 - 22, 8 p. 
 - Notes, comments... ;  72 .
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.014 (100) =20 LOE No.72.