Here are entered works on methane as a combustible gas formed in coal mines. Works on methane present in a stratum of coal are entered under Coalbed methane.
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Coalbed methane. / https://id.loc.gov/authorities/subjects/sh85027414 : Flores, Romeo M.,
2014
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Coalbed methane -- West (U.S.) / https://id.loc.gov/authorities/subjects/sh85027414 https://id.loc.gov/authorities/subjects/sh85146140-781
