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Dyfyniad Arddull ChicagoPain, H J. Physics of Vibrations and Waves. 2nd ed. London: Wiley Eastern, 1976.
Dyfyniad MLAPain, H J. Physics of Vibrations and Waves. 2nd ed. Wiley Eastern, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.