The Letter of Petrus Peregrinus On the Magnet# B1196
Petrus Peregrinius was an engineer in the French Army Corps who wrote down his thoughts on magnetism and its properties. Originally published in 1269, it was reprinted in 1904 and again in this 1993 reprint, currently out of print and rare. Considered a landmark in the field of magnetism. Booklet, 40 pages. New.
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