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Dyfyniad Arddull ChicagoAmerican Chemical Society. Division of Environmental Chemistry. Preprints of Papers. Chicago: [American Chemical Society. Division of Environmental Chemistry].
Dyfyniad MLAAmerican Chemical Society. Division of Environmental Chemistry. Preprints of Papers. [American Chemical Society. Division of Environmental Chemistry].
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.