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Coal industry annual
USA / Energy Information Administration - Washington, DC : US Gov. Print. Off. - 1=18.1993(1994) - 2=19.1994(1995); 20.1995(1996) -
Persistent link: https://www.econbiz.de/10000544947
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Coal prices
National Board for Prices and Incomes - 1969
Persistent link: https://www.econbiz.de/10000329205
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Annual coal report
USA / Energy Information Administration - Washington, DC : NTIS - Nachgewiesen 33.2008 -
Persistent link: https://www.econbiz.de/10008822833
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Mines of coal
Great Britain / Ministry of Power - 1957
Persistent link: https://www.econbiz.de/10003171415
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Annual coal report
USA / Energy Information Administration - Washington, DC : [Verlag nicht ermittelbar] - 1994 -
Persistent link: https://www.econbiz.de/10002538758
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Annual coal report
USA / Energy Information Administration - Washington, DC : National Technical Information Service - Nachgewiesen 26.2001(2003) - 37.2012(2013)
Persistent link: https://www.econbiz.de/10001971289