Columbia subject headings:
Harvard subject headings:
Authors, German--Germany--Spiekeroog Island--Biography.
Authors, German--Travel--Germany--Spiekeroog Island.
Hagena, Katharina, 1967---Travel--Germany--Spiekeroog Island.
Spiekeroog Island (Germany)--Description and travel.
Princeton subject headings:
Hagena, Katharina, 1967---Travel--Germany--Spiekeroog Island.
Spiekeroog Island (Germany)--Description and travel.