Columbia subject headings:
Europe, Central--Religion--20th century--Congresses.
Poland--Religion--20th century--Congresses.
Religion--Study and teaching (Higher)--Europe, Central--Congresses.
Religion--Study and teaching (Higher)--Poland--Congresses.
Religious pluralism--Congresses.
Harvard subject headings:
Europe, Central--Religion--20th century--Congresses.
Poland--Religion--20th century--Congresses.
Religion--Study and teaching (Higher)--Europe, Central--Congresses.
Religion--Study and teaching (Higher)--Poland--Congresses.
Religious pluralism--Congresses.
Princeton subject headings: