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: Coal Association of Canada, 1978.
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2
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: Coal Association of Canada, 1978.
Other Authors: '; “...Anderheggen, E....”
3
Cover Image
: Coal Association of Canada, 1978.
Other Authors: '; “...Anderheggen, E....”

Related Subjects

Coal Coal mining Coal preparation Coal utilization Research and development Coal conversion Coal industry Energy CRISIS Mining geology Safety Technology