Columbia subject headings:
Catholic Church--Relations--Lutheran Church.
Church--History of doctrines--20th century.
Ecumenical movement--History--20th century.
Justification (Christian theology)--Biblical teaching.
Justification (Christian theology)--History of doctrines--20th century.
Lutheran Church--Relations--Catholic Church.
Salvation--Christianity--History of doctrines--20th century.
Harvard subject headings:
Catholic Church--Relations--Lutheran Church.
Church--History of doctrines--20th century
Ecumenical movement--History--20th century.
Justification (Christian theology)--Biblical teaching.
Justification (Christian theology)--History of doctrines--20th century.
Lutheran Church--Relations--Catholic Church
Salvation--History of doctrines--20th century.
Princeton subject headings: