Report - B B’ - SGMmapserver.sgm.gob.mx/Cartas_Online/geologia/523_G12-B19_GM.pdf · g12− b28 g12− b29 27° 30’ 27° 30’ 27° 45’ 28° 00’ 28° 15’ 27° 45’ 28° 15’ 28°

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