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  1. 1
    Refractarios: un aspecto clave en la industria del cemento

    Refractarios: un aspecto clave en la industria del cemento by Percy Castillo Neira

    Published 1985-09-01
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  2. 2
    Use or rice husk ash an addition in mortar

    Use or rice husk ash an addition in mortar by Julián Salas, Percy Castillo, M. Isabel Sánchez de Rojas, Janer Veras

    Published 1986-09-01
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    Article

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