Magnetic Variation

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Magnetic Variation

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Magnetic Variation

BELLIN, Jacques-Nicolas Carte des variations de la Boussole et des vents généraux que l'on trouve dans les mers les plus frequentées

Magnetic variation in the Atlantic and Indian Oceans

£1,000

By BELLIN, Jacques-Nicolas, 1765 [but 1792-1804].

CHURCHMAN, John To George Washington President of the United States of America this Magnetic Atlas or Variation Chart is humbly inscribed by John Churchman.

A presentation copy of the last gasp for Edmund Halley’s theory for the determination of longitude by magnetic declination

£50,000

By CHURCHMAN, John, 1790