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  1. 1
    Carbones colombianos : atlas petrográfico.

    Carbones colombianos : atlas petrográfico. द्वारा Gómez Rojas, Olga Patricia; Universidad Pedagógica y Tecnológica de Colombia

    प्रकाशित 2015
    Online


  2. 2
    Presence of contamination by As Cd, As, Pb, Se, and Hg in coals of the Cundiboyacense area, Colombia

    Presence of contamination by As Cd, As, Pb, Se, and Hg in coals of the Cundiboyacense area, Colombia द्वारा Gómez-Rojas, Olga Patricia, Díaz-Lagos, Mercedes, Blandón-Montes, Astrid, Martínez-Ovalle, Segundo Agustín

    प्रकाशित 2016
    Online


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