Postal History

Joseph Furtenbach, Mannhaffter Kunstspiegel from 1663, wonderful work over technology and calculations, with his notations has he many Erfindungen and technical knowledge of the Middle Ages over the thirty year´s war in the “young modern age” saved, the also today still of importance and grundlagenbildend are, exciting, also for architects, because amongst other things also static calculations indicated are, to be sure new bound, but in otherwise very good preservation

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