Columbia subject headings:
World War, 1939-1945--Religious aspects--Catholic Church.
World War, 1939-1945--Underground movements--Netherlands--Limburg.
Harvard subject headings:
Princeton subject headings:
Limburg (Netherlands)--History--German occupation, 1940-1945.
Limburg (Netherlands)--History.
World War, 1939-1945--Underground movements--Netherlands--Limburg.