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Radcliffe Tracts 72 (11)Michell, J.
A Treatise of Artificial Magnets; in which is shewn an Easy and Expeditious Method of making them Superior to the best Natural Ones, and of Changing or Converting their Poles. Directions are likewise given for making the Mariner's Needles in the best Form, and for touching them most advantageously, etc.
The Second Edition, corrected and improved. Cambridge: Printed by Joseph Bentham, Printer to the University, 1751.
[1934-41]
1751