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HARVARD Citation
Pro, C. et al. (2018). Early geomagnetic data from the Astronomical Observatory of Madrid (1879–1901). Geoscience data journal. pp. 87-93. [Online].
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Pro, C. et al. (2018). Early geomagnetic data from the Astronomical Observatory of Madrid (1879–1901). Geoscience data journal. pp. 87-93. [Online].