. Boletín. INSTITUTO GEOLÓGICO DE MÉXICO. Fot. 18.—Conglomerados y grava, en el cerro del Coyote,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Instituto Geológico de México; Universidad Nacional de México. Instituto de Geología. México : Instituto

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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1910, bookyear1918