Illustrated description of a design for a concrete roadbed using longitudinal timber supports for the rails, giving estimate of cost. (1100 w.) (No. 79423)
A concrete roadbed for railroads
Ry Age
1906
Aufsatz (Zeitschrift)
Englisch
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Roadbed of railroads cross-section of the C., C., C. and St. L. Ry.
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