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Dyfyniad Arddull ChicagoKnop, Andre, and W. Scheib. Chemistry and Application of Phenolic Resins. Berlin: Springer-Verlag, 1979.
Dyfyniad MLAKnop, Andre, and W. Scheib. Chemistry and Application of Phenolic Resins. Springer-Verlag, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.