"Data for Abruptly Beginning Magnetic Disturbances, 1906-1909, No.1," Terrestrial Magnetism and Atmospheric Electricity XVI, No. 2, June 1911
BUITENZORG MAGNETIC DISTURBANCES, 1906-09
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"Data for Abruptly Beginning Magnetic Disturbances, 1906-1909, No.1," Terrestrial Magnetism and Atmospheric Electricity XVI, No. 2, June 1911 BUITENZORG MAGNETIC DISTURBANCES, 1906-09
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