Columbia subject headings:
Harvard subject headings:
Shipwrecks--Germany--Hiddensee--History.
Shipwrecks--Germany--Rügen--History.
Underwater archaeology--Germany--Hiddensee.
Underwater archaeology--Germany--Rügen.
Princeton subject headings:
Shipwrecks--Germany--Hiddensee--History.
Shipwrecks--Germany--Rügen--History.
Underwater archaeology--Germany--Hiddensee.
Underwater archaeology--Germany--Rügen.