Nuestras Tareas. 1er. Grado  / 
MINED. 
 - 3a ed. 
 - SAN SALVADOR, EL SALVADOR :  MINED,  1987 
 - 20 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCACION--EL SALVADOR<br/>EDUCACION PRIMARIA
<br/><br/><label>Dewey Class. No.: </label>372.241  / E37