@book{1902,
	author = {Organizacion Mundial de la Salud},
	title = {Environmental Health Criteria 228: Principles and Methods for the Assessment of Risk from Essential Trace Elements},
	publisher = {Organizacion Mundial de la Salud},
	year = {2002},
	address = {Ginebra},
	edition = {1° ed.},
	note = {Baja Depósito Caja 31 Junio 2019}
}