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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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Census of mineral industries / Industry series / Coal mining
USA / Bureau of the Census - 1987-1992: Washington, DC : [Verlag nicht ermittelbar] - 1987 - 1992[?]
Persistent link: https://www.econbiz.de/10002081586
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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