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Top Terms > Materials > Classes of materials > Natural earth crust materials > Rocks > Coal > Lignite

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Lignite (Rbersm)

Use For
Brown coal
Earth coal
Broader Term
Coal (Rbers)
Related Terms (Hierarchical)
Anthracite (Rbersb)
Bituminous coal (Rbersd)
Subbituminous coal (Rberss)