Columbia subject headings:
Baltic Sea Region--Religion--Congresses.
Catholic Church--Missions--Europe, Northern--History--Congresses.
Europe, Northern--Religion--Congresses.
Orthodox Eastern Church--Missions--Congresses.
Scandinavia--Religion--Congresses.
Harvard subject headings:
Baltic Sea Region--Religion--History--Congresses.
Catholic Church--Missions--Europe, Northern--History--Congresses.
Europe, Northern--Religion--History--Congresses.
Orthodox Eastern Church--Missions--Congresses.
Princeton subject headings:
Baltic Sea Region--Religion--History--Congresses.
Catholic Church--Missions--Europe, Northern--History--Congresses.
Europe, Northern--Religion--History--Congresses.
Fiction.
Orthodox Eastern Church--Missions--Congresses.