Columbia subject headings:
Harvard subject headings:
Counter-Reformation--Belgium--Congresses.
Liège (Belgium : Province)--Church history--Congresses.
Limburg (Belgium : Duchy)--Church history--Congresses.
Protestantism--Belgium--Congresses.
Reformation--Belgium--Congresses.
Princeton subject headings:
Belgium--Church history--Congresses.
Reformation--Belgium--Liège (Province)--Congresses.
Reformation--Belgium--Limburg (Province)--Congresses.