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Terrestrial magnetism.
Churchman, John, —1805. **G_389A.192 An explanation of the magnetic atlas, or variation chart, hereunto annexed; projected on a plan entirely new... — Philadelphia: Printed by James & Johnson ...M,DCC,XC. 46, 5, (1) pp. Tables. 22% cm., in 4s.
 
Lhts card was printed at the ‘vn > Pubitc Library, February 9, 1935.
D6666 — Terrestrial magnetism.