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  • ES QUE NO ENTIENDO , PORQUÉ TIENEN QUE SER DURMIENTES DE MADERA , PUEDEN  SER METÁLICOS, DE PLÁSTICO DURO ETC. , POR FAVOR NO DESTRUIR LA NATURALEZA.

    0arnaldo9 2 months ago

  • Un problema es la corta vida util de los durmientes de madera, exigirga un flujo constante de durmiente para irlos cambiando constantemente

    FUNDARIVEN 1 year ago

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