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Usman Pagalay, M.Si.. (2009). MATHEMATICAL MODELLING (Cet. 1). MALANG: UIN-MALANG PRESS.

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Usman Pagalay, M.Si.. MATHEMATICAL MODELLING. Cet. 1 MALANG: UIN-MALANG PRESS, 2009. Text.

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Usman Pagalay, M.Si.. MATHEMATICAL MODELLING. Cet. 1 MALANG: UIN-MALANG PRESS, 2009. Text.

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Usman Pagalay, M.Si.. MATHEMATICAL MODELLING. Cet. 1 MALANG: UIN-MALANG PRESS, 2009. Print.