Columbia subject headings:
Polycarp, Saint, Bishop of Smyrna.
Theology--Early works to 1800.
Harvard subject headings:
Apostolic Fathers.
Martyrdom of Polycarp
Polycarp, Saint, Bishop of Smyrna--Correspondence.
Polycarp, Saint, Bishop of Smyrna. Epistola ad Philippenses.
Theology--Early works to 1800
Princeton subject headings: