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Bmam. Scan from Johann Christoph Brotze's book Sammlung verschiedner Lieflndischer Monumente Der Mariensee bey Riga jenseit der Dna hat eine Stauung bey der daran liegenden Marienmhle die Ansichten University of Latvia Academic Library acadlib lv Johann Christoph Brotze PDold Johann Christoph Brotze Riga in the th century