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Dyfyniad Arddull ChicagoHildebrand, Milton. Analysis of Vertebrate Structure. 4th ed. New York: John Wiley, 1995.
Dyfyniad MLAHildebrand, Milton. Analysis of Vertebrate Structure. 4th ed. John Wiley, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.