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Dyfyniad Arddull ChicagoNeil, gershenfeld.A. The Nature of Mathematical Modeling. New York: Oxford University Press, 1999.
Dyfyniad MLANeil, gershenfeld.A. The Nature of Mathematical Modeling. Oxford University Press, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.