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Dyfyniad Arddull ChicagoSolar-hydrogen Energy Systems: Hydrogen Production, Storage, and Utilisation. New York: Pergamon Press, 1979.
Dyfyniad MLASolar-hydrogen Energy Systems: Hydrogen Production, Storage, and Utilisation. New York: Pergamon Press, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.