IEA Coal Research. (1989). The Problems of sulphur. Published by Butterworths on behalf of IEA Coal Research.
Cita Chicago Style (17a ed.)IEA Coal Research. The Problems of Sulphur. London ; Boston: Published by Butterworths on behalf of IEA Coal Research, 1989.
Cita MLA (8a ed.)IEA Coal Research. The Problems of Sulphur. Published by Butterworths on behalf of IEA Coal Research, 1989.
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