@book{38276,
	author = {Valdespino Echauri, Leticia. and Velasquez, Elizabeth,},
	title = {La educaci�on preescolar en zonas marginadas :},
	publisher = {Trillas,},
	year = {1990.},
	series = {Pedagogia para la primera infancia},
	address = {Mexico :},
	edition = {2a ed.},
	note = {Incluye indice.}
}