Columbia subject headings:
North Friesland (Germany : Region)--History.
Storm surges--Germany--North Friesland (Region)
Harvard subject headings:
North Friesland (Germany : Region)--History.
Storm surges--Germany--North Friesland (Region)
Princeton subject headings:
North Friesland (Germany : Region)--History.
Storm surges--Germany (West)--North Friesland.