Draft instruments for assessing learning achievements :  survey questionnaires and tests / 
Paul Pawar...(et al.) 
 - Paris :  UNESCO,  1992. 
 - 78 p. ;  il. 
 - Studies and working documents ;  2. .
<br/><br/><label>No. de Clasificación Universal Decimal: </label>373.3 (100)=20 "1992" DRA No.2.