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Clean coal technology : programmes and issues
(1987)
The coalmining industry : a framework for international comparison
Essenberg, Bert, (1985)
Auf dem Weg zu einer "COAL-PEC"?
Haftendorn, Clemens, (2008)
Future coal prospects : country and regional assessments
Greene, Robert P., (1980)
[Besprechung von:] Wilson, Carroll L.: Coal bridge to the future. Report of the World Coal Study. Vol. 1. Cambridge/Mass. 1980. Greene, Robert P. and Michael J. Gallagher: Future coal prospects. Country and regional assessments. World Coal Study (companion volume to final report). Cambridge/Mass. 1980
Newcomb, Richard, (1981)