Columbia subject headings:
Catholic Church--Doctrines--Papal documents.
Church and social problems--Catholic Church--Papal documents.
Harvard subject headings:
Princeton subject headings:
Catholic Church--Doctrines.
Catholic Church. Pope (1978-2005 : John Paul II). Sollicitudo rei socialis.
Christian sociology--Catholic Church--Papal documents.
Christian sociology--Catholic Church.
Church and social problems--Catholic Church.
Papal documents.