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- NEUDRUCKE VON SCHRIFTEN UND KARTEN UEBER METEOROLOGIE UND ERDMAGNETISMUS covers important contributions to meteorology and earth magnetism from the Middle Ages to the 19th century, with manuscripts, printed texts and maps in facsimile reprints. Scholarly introductions and annotations by Gustav Hellmann, a pioneer in the history of these sciences, from the Berlin Meteorological Institute. Many numbers were already out of print before the series was finished in 1904, making a complete set extremely rare.