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Bremerhaven . en Map showing the city of Bremerhaven Germany in dotted line marks the location of the former fortress city of Carlsburg de Plan von Bremerhaven aus dem Jahr Eine gepunktete Linie markiert den Umriss der ehemaligen Festungsstadt Carlsburg Harry Gabcke Bremerhaven in zwei Jahrhunderten Band Nordwestdeutsche Verlagsgesellschaft