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Dyfyniad Arddull ChicagoDECIUS, John Courtney, and Robert Maurice HEXTER. Molecular Vibrations in Crystals. New York: McGraw-hill, 1977.
Dyfyniad MLADECIUS, John Courtney, and Robert Maurice HEXTER. Molecular Vibrations in Crystals. McGraw-hill, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.