Columbia subject headings:
Holocaust, Jewish (1939-1945)--Germany--Friesland--Congresses.
Jews--Germany--Friesland--History--Congresses.
Harvard subject headings:
Jews--Germany--North Friesland (Region)--History--Congresses.
Jews--Germany--Ostfriesland--History--Congresses.
Jews--Netherlands--Friesland--History--Congresses.
Princeton subject headings:
Jews--Germany--North Friesland (Region)--History--Congresses.
Jews--Germany--Ostfriesland--History--Congresses.
Jews--Netherlands--Friesland--History--Congresses.