@book{248503,
	author = {Catholic Church},
	title = {Encyclical letter Sollicitudo rei socialis 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 = {Office of Publishing and Promotion Services, United States Catholic Conference},
	year = {[1987]},
	series = {Publication / Office of Publishing and Promotion Services, United States Catholic Conference},
	address = {Washington, D.C.},
	note = {Cover title: On social concern : Sollicitudo rei socialis, encyclical letter, December 30, 1987.}
}