A Treatise on Electricity and Magnetism Volume 1 489.jpg
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A Treatise on Electricity and Magnetism Volume 1 489, Electric field lines, A Treatise on Electricity and Magnetism diagrams, A Treatise on Electricity and Magnetism Volume I
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ja
電気及磁性論説1巻489号、電場線、電気及磁性図論1巻1号
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nonmagnetic magnetism magnetically treatise tract tractive electrical system