@book{11945,
	author = {León Cabrera, Ricardo,   Rodríguez Aguilar, Maricela,   Cuevas Vargas, María del Pilar,   Mata Hernández, Lilia},
	title = {Descubre el mundo de la química 1},
	publisher = {Prentice Hall, },
	year = {1998},
	address = {México :},
	edition = {2a ed.}
}