Switches and Crossings: Formula for Ascertaining the Angles of Crossings, the Lengths of Switches, and the Distances of the Points of the Crossings (1871)
William Donaldson
Switches and Crossings: Formula for Ascertaining the Angles of Crossings, the Lengths of Switches, and the Distances of the Points of the Crossings (1871)
William Donaldson
Formula For Ascertaining The Angles Of Crossings, The Lengths Of Switches, And The Distances Of The Points Of The Crossings And The Heels Of The Switches From The Springing Of The Curve.
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