Observations for determining the length of a degree of latitude in the provinces of Maryland and Pennsylvania, in North America By Messieurs Charles Mason and Jeremiah Dixon. To which is prefixed an introduction: By the Rev. Nevil Maskelyne, B.D.F.R.S. Astronomer royal.
- Mason, Charles, 1728-1786.
- Date:
- Printed in the year MDCCLXIX. [1769]
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Observations for determining the length of a degree of latitude in the provinces of Maryland and Pennsylvania, in North America (Online)
Observations for determining the length of a degree of latitude in the provinces of Maryland and Pennsylvania, in North America; By Messieurs Charles Mason and Jeremiah Dixon. To which is prefixed an introduction: By the Rev. Nevil Maskelyne, B.D.F.R.S. A
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London : [s.n.], Printed in the year MDCCLXIX. [1769]
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- Full text available: 1769.