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Mie̜dzynarodowa konkurencyjność polskiego górnictwa we̜glowego
Danielewski, Jan - 1991
Persistent link: https://www.econbiz.de/10000825595
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World coal : economics, policies and prospects
Gordon, Richard L. - 2010
Persistent link: https://www.econbiz.de/10008648442
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Coal in the U.S. energy market
Gordon, Richard L. - 1978
Persistent link: https://www.econbiz.de/10000001219
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Federal coal leasing policy : competition in the energy industries
Gordon, Richard L. - 1981
Persistent link: https://www.econbiz.de/10002466701