The railroad taper
Subtitle: the theory and application of a compound transition curve based upon thirty-foot chords
By: by Lee Perkins.
Edition: 1st ed. 1st thousand.
Publisher: John Wiley & sons, inc.; [etc., etc.]
Published: 1915
Place of publication: New York
Language: eng
Number of pages: 356
Subjects: Railroads -- Curves and turnouts