Columbia subject headings:
Catholic Church--United States--History--20th century.
Christian ethics--History of doctrines--20th century.
Christian sociology--Catholic Church--History of doctrines--20th century.
Social ethics--History--20th century.
Harvard subject headings:
Catholic Church--United States--History--20th century.
Christian ethics--History of doctrines--20th century.
Christian ethics--History--20th century
Christian sociology--Catholic Church--History of doctrines--20th century.
Social ethics--History--20th century.
Princeton subject headings:
Catholic Church--United States--History--20th century.
Christian ethics--History of doctrines--20th century.
Christian sociology--Catholic Church--History of doctrines--20th century.
Social ethics--History--20th century.