The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 168
eated the same day inreverse order, the corrections applied as obtained from thiscorrection curve, dnd the means taken. Observations shouldbe made when the humidity of the air is as nearly constant aspossible, and never in times of changeable or snowy weather.Let the student measure the heights of…
Surveying
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