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Dyfyniad Arddull ChicagoSors, Laszlo. Plastic Mould Engineering. Oxford: Pergamon Press, 1967.
Dyfyniad MLASors, Laszlo. Plastic Mould Engineering. Pergamon Press, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.