@book{32844,
	author = {Piaget, Jean, 1896 - 1980. and González Aramburu, Francisco, tr.},
	title = {Biología y conocimiento : },
	publisher = {Siglo Veintiuno Editores, },
	year = {1969.},
	series = {Psicologia y etologia},
	address = {México : }
}