Columbia subject headings:
Harvard subject headings:
Apologetics--Early works to 1800
Apologetics--Early works to 1800.
Apologetics--History--17th century
Catholic Church--Controversial literature.
Catholic Church--Doctrines.
Grace (Theology)
Princeton subject headings:
Apologetics--Early works to 1800.
Catholic Church--Doctrines--Early works to 1800.
Grace (Theology)--Early works to 1800.