@book{9227,
	author = {Armitage, P. and Bery, G.},
	title = {Estadistica para la Investigación biomedica /},
	publisher = {Harcourt Brace,},
	year = {1997.},
	address = {Madrid :},
	edition = {3a ed.},
	note = {Incluye indice de Materias.}
}