SEARCH

SEARCH BY CITATION

References

  • Churchman, J., 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 Precisely Determined for Any Time, Past, Present, or Future: And the Variation and Latitude Being Accurately Known, the Longitude Is of Consequence Truly Determined, James & Johnson, Philadelphia, 1790.
  • Churchman, J., 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, the Longitude May Be Ascertained, Printed for the author by Darton and Harvey, London, 1794.
  • Churchman, J., 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, the Longitude May Be Ascertained, (3rd edition with additions), Printed for the author and sold by Gaine and Ten Eyck, 1800.
  • Gillespie, W. M., A Treatise on Land-surveying5, D. Appleton & Co., New York, 1857.
  • Richeson, A. W., English Land Measuring to 1800: Instruments and Practices, The Society for the History of Technology and the MIT Press, Cambridge, Mass., and London, England, 1966.