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BMAm. Scan from Johann Christoph Brotze's book Sammlung verschiedner Lieflndischer Monumente Iwanogrod im Jahr Eduard Philipp Krber die Ansicht Das Brigitten Kloster bei Reval Anno University of Latvia Academic Library acadlib lv Johann Christoph Brotze PDold Johann Christoph Brotze History of Ivangorod Ivangorod fortress Drawings