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  1. Hernández-Castro, Franklin [ Autor/In ]

    Study of principles and methods of proportion

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    University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online), 2007-03-19

    BASE - Bielefeld Academic Search Engine , University of Duisburg-Essen: DuEPublico2 (Duisburg Essen Publications online)