Columbia subject headings:
Berlin (Germany)--Population.
Pomerelia (Poland)--Biography.
Prussia, East (Poland and Russia)--Biography.
Harvard subject headings:
Berlin (Germany)--Population.
Pomerelia (Poland)--Biography.
Prussia (Germany)--Biography.
Prussia, East (Poland and Russia)--Biography.
Prussia, West (Poland)--Biography.
Princeton subject headings:
Berlin (Germany)--Population.
Prussia, East (Poland and Russia)--Biography.
Prussia, West (Poland)--Biography.