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Coal -- Gasification. SEE: Coal gasification Matches 2 items
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| Coal gasification. Matches 2 items |
| Coal -- History. Matches 1 item |
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Coal industry. SEE: Coal trade Matches 2 items
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Coal industry -- Corrupt practices -- United States. SEE: Coal trade -- Corrupt practices -- United States Matches 1 item
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Coal industry -- Environmental aspects. SEE: Coal trade -- Environmental aspects Matches 1 item
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Coal industry -- Government policy -- United States. SEE: Coal trade -- Government policy -- United States Matches 1 item
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Coal industry -- united States. SEE: Coal trade -- united States Matches 1 item
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| Coal -- Juvenile literature. Matches 1 item |
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Coal lands -- Environmental aspects. SEE: Coal -- Environmental aspects. Matches 2 items
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