Field-Book for Railroad Engineers: Containing Formulae for Laying Out Curves, Determining Frog Angles, Levelling, Calculating Earth-Work, Etc., Etc., ... Chords, Magnetic Variation, Logarithms, Logar - Couverture souple

Henck, John Benjamin

 
9781145927490: Field-Book for Railroad Engineers: Containing Formulae for Laying Out Curves, Determining Frog Angles, Levelling, Calculating Earth-Work, Etc., Etc., ... Chords, Magnetic Variation, Logarithms, Logar

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