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3 results returnedMethane emission from U.S. coal mines :a survey
Methane emission from U.S. coal mines in 1973,a survey: a supplement to IC 8558
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Subject
- Mine gases (3) *
- Coal mines and mining--United States (2)
- Coalbed methane (1)
- Methane--Measurement (1)
- Mine ventilation (1)
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