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Die Ausarbeitung einer neuen Deich- und Sielordnung für Ostfriesland Enthält: Kommissionsprotokolle
Landdrostei Aurich (1813-1885) >> 8 H O C H , - T I E F - U N D W A S S E R B A U >> 8.5 WASSERBAU >> 8.5.1 Deich- und Sielwesen >> 8.5.1.1 Organisation