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| Detailed Reference Information | 
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| Hazard, D.L. (1912). Results of some long series magnetic observatory observations: Colaba (1846–1905), Pola (1847–1909), and Potsdam (1892–1900). Terrestrial Magnetism and Atmospheric Electricity 17. doi: 10.1029/TE017i002p00070. issn: 0096-8013. |  |  
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| Journal Terrestrial Magnetism and Atmospheric Electricity
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| Publisher American Geophysical Union
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