Columbia subject headings:
Catholic Church--Doctrines--Periodicals.
Catholic Church--Nigeria--Doctrines--Periodicals.
Theology, Doctrinal--Nigeria--Periodicals.
Theology--Periodicals.
Harvard subject headings:
Catholic Church--Doctrines--Periodicals.
Catholic Church--Theology--Periodicals.
Theology, Doctrinal--Nigeria--Periodicals.
Theology--Periodicals
Princeton subject headings: