Columbia subject headings:
Religious gatherings--Law and legislation--Netherlands--Utrecht.
Secrecy--Law and legislation--Netherlands--Utrecht.
Utrecht (Netherlands)--Church history--Sources.
Harvard subject headings:
Religious gatherings--Law and legislation--Netherlands--Utrecht.
Religious gatherings--Netherlands--Utrecht--History--Sources.
Secrecy--Law and legislation--Netherlands--Utrecht.
Utrecht (Netherlands)--Church history--Sources.
Princeton subject headings: