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Keywords from Image Description:
Bernard Brunhes Memorial Plate. fr Plaque commmorative du centenaire de la dcouverte par Bernard Brunhes des inversions du champ magntique terrestre Cette plaque en lave maille est dispose devant l'entre de l'Observatoire de physique du globe de ClermontFerrand OPGC en Plaque commemorating the centenary of the discovery by Bernard