Experiencias cientificas para maestros de escuelas elementales
Salem, Donald.
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 .
Translation of Science experiences for elementary school teachers.
Science--Study and teaching (Elementary)
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 .
Translation of Science experiences for elementary school teachers.
Science--Study and teaching (Elementary)