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Bmabm. Scan from Johann Christoph Brotze's book Sammlung verschiedner Lieflndischer Monumente Prospect der Stadt Riga von Liflndischer Seiten unter bloquirung des Knigs von Polen Anno die Gravre University of Latvia Academic Library acadlib lv Johann Christoph Brotze PDold Johann Christoph Brotze Old views of Riga Siege of Riga