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Dyfyniad Arddull ChicagoInternational Agency for Research on Cancer. IARC Monographs on the Evaluation of Cacinogenic Risks to Humans: Wood Dust and Formaldehyde. Lyon: World Health organization, 1995.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.