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Costa Augusto Ramos da & Rueda M. Arithmetica Systema Metrico e Geometria elementar (4ª classe).
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Dyfyniad Arddull Chicago
Costa Augusto Ramos da and Rueda M. Arithmetica Systema Metrico E Geometria Elementar (4ª Classe).
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Dyfyniad MLA
Costa Augusto Ramos da and Rueda M. Arithmetica Systema Metrico E Geometria Elementar (4ª Classe).
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.