@book{15917,
	author = {John Paul},
	title = {Sollicitudo rei Socialis: Encyclical Letter of the Supreme Pontiff John Paul II to the Bishops, Priests, Religious Families, Sons and Daughters of the Church, and all People of Good-will for the Twentieth Anniversary of Populorum Progressio.},
	publisher = {United States Catholic Conference,},
	year = {1987-1993},
	address = {Washington, DC :},
	note = {Cover title.}
}