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Dyfyniad Arddull ChicagoRadhakrishnan Nair, P. Polyurethanes for Extreme Temperature Conditions. Trivandrum: VSSC, 1996.
Dyfyniad MLARadhakrishnan Nair, P. Polyurethanes for Extreme Temperature Conditions. VSSC, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.