Columbia subject headings:
Catholic Church--Doctrines--History--Periodicals.
Catholic Church--Periodicals.
Philosophy--Periodicals.
Theology--Periodicals.
Harvard subject headings:
Catholic Church--Periodicals.
Philosophy--Periodicals
Theology--Periodicals
Princeton subject headings:
Catholic Church--Periodicals.
Periodicals.
Philosophy--Periodicals.
Theology--Periodicals.