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Dyfyniad Arddull ChicagoLedder, Glenn. Differential Equations: A Modelling Approach. Boston: McGraw Hill higher education, 2005.
Dyfyniad MLALedder, Glenn. Differential Equations: A Modelling Approach. McGraw Hill higher education, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.