@book{1920,
	author = {Organizacion Mundial de la Salud},
	title = {Environmetal Health Criteria 140: Polychlorinated Biphenyls and Terphenyls },
	publisher = {Organizacion Mundial de la Salud},
	year = {1993},
	address = {Ginebra},
	edition = {2° ed.},
	note = {Baja depósito Caja 32 Junio 2019}
}