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The magnetic atlas, or Variation charts of the whole terraqueous globe : comprising a system of the variation & dip of the needle by which the observations being truly made, the lo...

by Churchman, John
Published 1800

Printed for the author, and sold by Gaine & Ten Eyck, no. 148, Pearl-Street

Subjects: “...Geomagnetism...”

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An explanation of the magnetic atlas, or variation chart, hereunto annexed : projected on a plan entirely new, by which the magnetic variation on any part of the globe may be preci...

by Churchman, John
Published 1790

Printed by James & Johnson, on the north side of Market-Street, between Third and Fourth-Streets

Subjects: “...Geomagnetism...”

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The magnetic atlas, or variation charts of the whole terraqueous globe : Comprising a System of the variation and Dip of the Needle, by which, the observations being truly made, th...

by Churchman, John
Published 1794

printed for the author, by Darton and Harvey; and sold by John Sewell, Cornhill; Charles Dilly, Poultry; T. and J. Egerton, opposite the Admiralty; James Phillips, George Yard, Lombard-Street; and Steel and son, Tower-Hill. MDCCXCIV. (entered at Stationers-Hall.)

Subjects: “...Geomagnetism...”

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