The railroad spiral
Subtitle: The theory of the compound transition curve reduced to practical formulae and rules for application in field work
By: By William H. Searles
Edition: 6th ed. Rev. and enl. 12th thousand.
Publisher: J. Wiley
Published: 1912
Place of publication: New York
Language: eng
Number of pages: 127
Subjects: Railroads; Curves and turnouts