| Coal -- Combustion. Matches 1 item |
| Coal -- Environmental aspects. Matches 2 items |
| Coal -- Environmental aspects -- United States. Matches 1 item |
| Coal-fired power plants. Matches 1 item |
| Coal-fired power plants -- Environmental aspects. Matches 1 item |
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Coal-fired power stations. SEE: Coal-fired power plants Matches 1 item
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Coal-gas -- Juvenile literature. SEE: Gas -- Juvenile literature Matches 2 items
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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 |