The railroad spiral.
Subtitle: The theory of the compound transition curve reduced to practical formulæ and rules for application in field work.
By: By William H. Searles.
Edition: 6th ed. Rev. and enl. 1st thousand.
Publisher: J. Wiley & sons; [etc., etc.]
Published: 1898
Place of publication: New York
Language: eng
Number of pages: 127
Subjects: Railroads -- Curves and turnouts.