Salem, Donald. <br/><br/>
Experiencias cientificas para maestros de escuelas elementales 
Hortensia Corona de Contin. 
 - México  Unión Tipográfica Editorial Hispano Americana  c1968 
 - vii, 102 p.  ill.  18 cm. 
 - Manual UTEHA breve  no. 394 Manuales Uteha .
<br/><br/> Translation of Science experiences for elementary school teachers. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)