@book{146009,
	author = {Hervada Xiberta, Francisco Javier, and Entremont, Alban d'.},
	title = {Introduccion critica al Derecho Natural},
	publisher = {Universidad de Navarra},
	year = {1986.},
	series = {Person and law: essays on philosophy of law and natural law.},
	address = {Pamplona},
	note = {Original title: Introducción crítica al derecho natural.}
}