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Keywords from Image Description:
Plan de la veine Luronne Bernissart . fr Plan de la veine Luronne Bernissart Belgique nl Kaart van de steenkoollaag Luronne in Bernissart Belgi en Map of coal seam Luronne in Bernissart Belgium Bulletin de la Socit Belge de Gologie de Paleontologie et de Hydrologie vol Cornet et Schmitz Note sur les puits naturels du terrain