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Dyfyniad Arddull ChicagoAklonis, John J., William J. MacKnight, and Mitchel Shen. Introduction to Polymer Viscoelasticity. New York: Wiley-Interscience, 1972.
Dyfyniad MLAAklonis, John J., et al. Introduction to Polymer Viscoelasticity. Wiley-Interscience, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.