@book{89700,
	author = {Piaget, Jean,},
	title = {El estructuralismo.},
	publisher = {Proteo},
	year = {[1968]},
	series = {Colección Estudios y ensayos fundamentales, 3},
	address = {Buenos Aires]},
	edition = {1. ed. en castellano.},
	note = {Translation of Le structuralisme.}
}