@book{1555,
	author = {Bertelson, Paul.},
	title = {The Onset of literacy :},
	publisher = {MIT Press,},
	year = {1987, c1986.},
	address = {Cambridge, Mass. :},
	edition = {1st MIT Press ed.},
	note = {Papers presented at a symposium held in Acapulco in September 1984.}
}