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Dyfyniad Arddull ChicagoWANG, X. Modern Power Systems Planning X. Wang, Jr. Mcdonald. McGraw-Hill, 1993.
Dyfyniad MLAWANG, X. Modern Power Systems Planning X. Wang, Jr. Mcdonald. McGraw-Hill, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.