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Books
Field-Book For Railroad Engineers
Containing Formulae For Laying Out Curves, Determining Frog Angles, Levelling, Calculating Earth-Work, Etc., Etc., Together With Tables Of Radii, Ordinates, ... »
Containing Formulae For Laying Out Curves, Determining Frog Angles, Levelling, Calculating Earth-Work, Etc., Etc., Together With Tables Of Radii, Ordinates, ... »
