Columbia subject headings:
Harvard subject headings:
Catholic Church--Doctrines--History--20th century.
Catholic Church--History--1965-
Catholics--Religious identity--History--20th century.
Identification (Religion)--History--20th century.
Princeton subject headings:
Catholic Church--Doctrines--History--20th century.
Catholic Church--History--1965-.
Identification (Religion)--History--20th century.