@book{38262,
	author = {Stodolsky, Susan S.},
	title = {La importancia del contenido en la ense�nanza :},
	publisher = {Ediciones Paidos,},
	year = {1991.},
	series = {Temas de educaci�on Paidos ;},
	address = {Barcelona :},
	note = {Titulo original: The subject matters. Classroom activity in math and social studies.}
}