Fleming, J. A. (1911). Mean values of the magnetic elements at observatories. The Johns Hopkins Press.
Cita Chicago Style (17a ed.)Fleming, J. A. Mean Values of the Magnetic Elements at Observatories. [Baltimore: The Johns Hopkins Press, 1911.
Cita MLA (9a ed.)Fleming, J. A. Mean Values of the Magnetic Elements at Observatories. The Johns Hopkins Press, 1911.
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