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Dyfyniad Arddull Chicago: proceedings of the SPI 30th anual technical marketing conference. Polyurethanes: : Exploring New Horizons. Canada: The society of the plastics Industry, 1986.
Dyfyniad MLA: proceedings of the SPI 30th anual technical marketing conference. Polyurethanes: : Exploring New Horizons. The society of the plastics Industry, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.