Columbia subject headings:
Griffin dynasty.
Pomerania (Poland and Germany)--History.
Pomerania (Poland and Germany)--Kings and rulers.
Harvard subject headings:
Griffin dynasty.
Pomerania (Poland and Germany)--History.
Pomerania (Poland and Germany)--Kings and rulers.
Princeton subject headings:
Griffin dynasty.
Pomerania (Poland and Germany)--History.
Pomerania (Poland and Germany)--Kings and rulers.