Columbia subject headings:
Mecklenburg (Germany : Region)--History.
Navigation--Germany--Mecklenburg (Region)--History.
Harvard subject headings:
Mecklenburg (Germany : Region)--History.
Navigation--Germany--Mecklenburg (Region)--History.
Princeton subject headings:
Mecklenburg (Germany : State)--History.
Navigation--Germany (East)--Mecklenburg (State)--History.