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1Published in Bulletin of the American Geographical Society (1914)Get access
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2by Alther, George R., Ruedisili, Lon C., Staubner, Hans, Kollbrunner, Curt F.Get access
Published in International Journal of Energy Research (1981)
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4Published in Bulletin of the American Geographical Society (1909)Get access
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5by Petersen, H.I., Øverland, J.A., Solbakk, T., Bojesen-Koefoed, J.A., Bjerager, M.Get access
Published in International Journal of Coal Geology (2013)
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6by Smits, Coco C.A., Justinussen, Jens Christian S., Bertelsen, Rasmus G.Get access
Published in Energy Research & Social Science (2016)
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7by Petersen, H.I., Bojesen-Koefoed, J.A., Nytoft, H.P., Surlyk, F., Therkelsen, J., Vosgerau, H.Get access
Published in International Journal of Coal Geology (1998)
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8by Bojesen-Koefoed, Jørgen A., Petersen, Henrik I., Surlyk, Finn, Vosgerau, HenrikGet access
Published in International Journal of Coal Geology (1997)
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10Published in Bulletin of the American Geographical Society (1909)Get access
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12Published in Bulletin of the American Geographical Society (1907)Get access
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13Published in Bulletin of the American Geographical Society (1907)Get access
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15Published in Journal of Petroleum Geology (1991)Get access
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18by Strogen, Dominic P., Marshall, John E. A., Whitham, Andrew G., Andrews, Steven D.Get access
Published in Journal of Petroleum Geology (2023)
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20by Bojesen-Koefoed, Jørgen A., Kalkreuth, Wolfgang, Petersen, Henrik I., Piasecki, StefanGet access
Published in International Journal of Coal Geology (2012)
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