@book{175376,
	author = {Harlen, Wynne.},
	title = {Enseñanza y aprendizaje de las ciencias},
	publisher = {Misnisterio de Educación y Ciencia},
	year = {1989.},
	series = {Educacion Infantil y Primaria},
	address = {Madrid},
	note = {Translation of: Teaching and learning primary science.}
}