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| brown coal | |||
| hydrogenous coal | |||
| lignite Coal of relatively recent origin consisting of accumulated layers of partially decomposed vegetation, intermediate between peat and bituminous coal; often contains patterns from the wood from which it formed (węgiel stosunkowo współczesnego pochodzenia, utworzony z częściowo rozłożonej roślinności; o charakterze pośrednim między torfem a węglem kamiennym) | |||
| lignite | |||