الإتاحة: https://doi.org/10.31055/1851.2372.v52.n1.16909Testhttp://repositorio.unne.edu.ar/handle/123456789/27749Test
الإتاحة: https://doi.org/10.31055/1851.2372.v52.n1Testhttps://revistas.unc.edu.ar/index.php/BSAB/article/view/16909Test
الإتاحة: http://repositorio.unne.edu.ar/handle/123456789/51770Test
الإتاحة: http://repositorio.unne.edu.ar/handle/123456789/474Test