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Dyfyniad Arddull ChicagoSteam at Work: Industrial and Marine Steam Plant [proceedings]. London: Mechanical Engineering Publication, 1977.
Dyfyniad MLASteam at Work: Industrial and Marine Steam Plant [proceedings]. Mechanical Engineering Publication, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.