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Dyfyniad Arddull ChicagoBoyle, Godfrey. Renewable Electricity and the Grid: The Challenge of Variability. London ; Sterling, VA: Earthscan, 2007.
Dyfyniad MLABoyle, Godfrey. Renewable Electricity and the Grid: The Challenge of Variability. Earthscan, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.