@book{12531,
	author = {Programa del Ambiente de Naciones Unidas},
	title = {Principles and methods for the assessment of risk from essential trace elements /},
	publisher = {World Health Organization,},
	year = {2002},
	series = {Environmental Health Criteria },
	address = {Geneva :},
	edition = {1a ed.},
	note = {Libro en el idioma Ingles.}
}