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Dyfyniad Arddull ChicagoTransit Cooperative Research Program, National Research Council (U.S.). Transportation Research Board, and Eno Transportation Foundation. Implementing New Technologies in Maintenance Systems and Departments in Europe. Washington, D.C: Transportation Research Board, 2005.
Dyfyniad MLATransit Cooperative Research Program, et al. Implementing New Technologies in Maintenance Systems and Departments in Europe. Transportation Research Board, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.