@book{154182,
	author = {Throop, Sara.},
	title = {Actividades preescolares, ciencias físicas y naturales},
	publisher = {Ediciones CEAC},
	year = {1978.},
	series = {Educación y Enseñanza},
	address = {Barcelona},
	edition = {4a ed.},
	note = {Translation of : Science for the young child.}
}