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4Published in Bulletin of the American Geographical Society (1905)Get access
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6Published in Bulletin of the American Geographical Society (1913)Get access
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7by Burroughs, Wilbur Greeley, Armistead, J. J.Get access
Published in Bulletin of the American Geographical Society (1915)
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8by Burroughs, Wilbur Greeley, Scull, E. MarshallGet access
Published in Bulletin of the American Geographical Society (1915)
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12Published in Bulletin of the American Geographical Society (1907)Get access
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13by Sorokhtin, N. O., Chilingar, G. V., Kozlov, N. E., Shin, S.Get access
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects (2012)
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16by Tysiachniouk, Maria, Henry, Laura A., Lamers, Machiel, van Tatenhove, Jan P.M.Get access
Published in Energy Research & Social Science (2018)
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17by Engen, Sigrid, Hausner, Vera Helene, Fauchald, Per, Ruud, Audun, Broderstad, Else GreteGet access
Published in Energy Research & Social Science ()
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20Published in Bulletin of the American Geographical Society (1905)Get access
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