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The clean use of coal : a technology review
(1985)
1952 - 2002 : 50 Jahre Kohleforschung der EGKS
(2002)
Carbonization and hydrogenation of coal
(1973)
Energy research, development and demonstration in the IEA countries : ... review of national programmes
Energy Market Reform
Energy policies beyond IEA countries / Ukraine [Elektronische Ressource]