Context

Context of A treatise of practical surveying; : which is demonstrated from its first principles. Wherein every thing that is useful and curious in that art, is fully considered and explained. Particularly three new and very concise methods for determining the arreas [sic] of right-lined figures arithmetically, or by calculation, as well as the geometrical ones heretofore treated of. : The whole illustrated with copper-plates., By Robert Gibson, teacher of the mathematics. ; With alterations and amendments, adapted to the use of American surveyors, (electronic resource)
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