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A Treatise Of Artificial Magnets: In Which Is Shown An Easy And Expeditious Method Of Making Them, Superior To The Best Natural Ones (1751)
A Treatise Of Artificial Magnets In Which Is Shown An Easy And Expeditious Method Of Making Them Superior To The Best Natural Ones - 1751 Author:John Michell And Also, A Way Of Improving The Natural Ones, And Of Changing Or Converting Their Poles.