Field-Book For Railroad Engineers. Containing Formul For Laying Out Curves, Determining Frog Angles, Levelling, Calculating Earth-Work, Etc., Etc., Together With Tables Of Radii, Ordinates, Deflections, Long Chords, Magnetic Variation, Logarithms, Logarit
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Reviews of Field-Book For Railroad Engineers. Containing Formul For Laying Out Curves, Determining Frog Angles, Levelling, Calculating Earth-Work, Etc., Etc., Together With Tables Of Radii, Ordinates, Deflections, Long Chords, Magnetic Variation, Logarithms, Logarit by John Benjamin Henck