Michiel Dusar (2022)
GSB lecture notes. Upper Carboniferous, general information
Geological Survey of Belgium, vol. 24/5/2022 p. 72 sl.
Popular Science
151, 150, 153, .63, .62, .47, Li, 133, 155, HYDCAR, LOG, NM, SYNAM, TEC, Ht, 26598, MINCOAL, H, CARB, PROSENER, PALGEO, VARCAMP, STRA
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