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Chilean, Argentine, and Bolivian coals
Flores-Williams, Hector - In: Coal resources of the Americas, (pp. 1-13). 1978
Persistent link: https://www.econbiz.de/10002203268
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Die Felderkarte der Ruhr
Kuhnke, Hans-Helmut - In: Glückauf : die Fachzeitschrift für Rohstoff, Bergbau … 107 (1971) 14, pp. 532-539
Persistent link: https://www.econbiz.de/10002264173
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Die Felderkarte der Ruhr
Kuhnke, Hans-Helmut - In: Glückauf : die Fachzeitschrift für Rohstoff, Bergbau … 109 (1973) 18, pp. 920-924
Persistent link: https://www.econbiz.de/10002264174
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Geology and mineral resources of Japan
Murakoshi, Tsukasa (contributor);  … - 1956
Persistent link: https://www.econbiz.de/10002283448
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U.S. coal resources and reserves
Parker, N. A.; Thompson, B. C. - 1976
Persistent link: https://www.econbiz.de/10003258194
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Environmental conditions of deposition of coal
White, David - In: Geology of coal, (pp. 12-32). 1984
Persistent link: https://www.econbiz.de/10002998688
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Coal resources of Illinois
Hopkins, M. E.; Simon, Jack. A. - 1974
Persistent link: https://www.econbiz.de/10002952874