COAL MINING + OTHER CARBONIFEROUS MINERALS (MINING)
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BTMINING/SPECIFIC MINERALS, ORES, ROCKS (MINING)
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UDC622.33
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Descriptor GERKOHLENBERGBAU + GEWINNUNG FESTER ORGANISCHER MINERALIEN (BERGBAU)
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Descriptor ENGCOAL MINING + OTHER CARBONIFEROUS MINERALS (MINING)
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Descriptor FRECHARBONS + MINERAIS SOLIDES D'ORIGINE ORGANIQUE + ROCHES CHARBONNEUSES (INDUSTRIE MINIÈRE)
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Variant GERKOHLE (BERGBAU)
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Variant GERBERGBAU/KOHLENBERGBAU
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Variant ENGMINING/COAL MINING (MINING)
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Variant ENGCOAL (MINING)
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Variant FREINDUSTRIE MINIÈRE/CHARBON
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Variant FREROCHES CHARBONNEUSES (INDUSTRIE MINIÈRE)
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Variant FREMINERAIS CARBONIFÈRES (INDUSTRIE MINIÈRE)
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NTBITUMINOUS ASPHALTS + SHALES + OIL SHALES (MINING)
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NTBROWN COAL + LIGNITE (MINING)
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NTCOALS (MINING)
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NTPEAT (MINING)