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Dyfyniad Arddull ChicagoRomankevich, Evgenil A. Geochemistry of Organic Matter in the Ocean. Berlin: Springer-Verlag, 1984.
Dyfyniad MLARomankevich, Evgenil A. Geochemistry of Organic Matter in the Ocean. Springer-Verlag, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.