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Dyfyniad Arddull ChicagoTeam, Open University. Elementary Mathematics for Science and Technology Course. Second Order Differential Equations. Bletchley, Bucks : Open University Press, 1972.
Dyfyniad MLATeam, Open University. Elementary Mathematics for Science and Technology Course. Second Order Differential Equations. Bletchley, Bucks : Open University Press, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.