Ornament Details
098800020000930_4
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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 longitude may be ascertained. By John Churchman, Fellow of the Russian Imperial Academy.
Printed for the author, and sold by Gaine & Ten Eyck, no. 148, Pearl-Street
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