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Petrology and chemistry of Permian coals from the Paraná Basin: 1. Santa Terezinha, Leão-Butiá and Candiota Coalfields, Rio Grande do Sul, Brazil

EngineeringCoal BasinPermian CoalsGeologyGeochemistrySedimentary PetrologyPetrologyCandiota CoalfieldsEarth ScienceParaná Basin