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Compagnie des mines de Bthune Coupe verticale nordsud passant par les puits et divers sondages. Compagnie des mines de Bthune mileAlexandre Vuillemin Le Bassin Houiller du PasdeCalais Tome Imprimerie Danel Creator mile Vuillemin PDold Compagnie des mines de Bthune
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