@book{36198,
	author = {Ginsburg, Herbert. and Brandt, Sylvia Opper,},
	title = {Piaget y la teoria del desarrollo intelectual /},
	publisher = {Editorial Prentice/Hall Internacional },
	year = {c1977.},
	address = {Englewood Cliffs, N.J. },
	note = {Translation of Piaget''s theory of intellectual development.}
}