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Dyfyniad Arddull ChicagoRailway and Locomotive Engineering: A Practical Journal of Railway Motive Power and Rolling Stock. New York: [s.n.], 1901.
Dyfyniad MLARailway and Locomotive Engineering: A Practical Journal of Railway Motive Power and Rolling Stock. [s.n.], 1901.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.