@book{64019,
	author = {Holloway, G. E. T. and Piaget, Jean,},
	title = {Concepción del espacio en el niño según Piaget.},
	publisher = {Ediciones Paidós},
	year = {1982},
	series = {Paidos Educador},
	address = {Barcelona},
	note = {Translation of : An introduction to "The child's conception of space."}
}