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,
|Edition:||The third edition with additions.|
|Online Access:||Full text online|
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