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Dyfyniad Arddull ChicagoParkus, Heinz. Thermoelasticity. 2nd rev.ed. New york: Springer-verlag, 1868.
Dyfyniad MLAParkus, Heinz. Thermoelasticity. 2nd rev.ed. Springer-verlag, 1868.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.