Louveigné-Spa. Carte géologique de Wallonie. 49/3-4. Notice explicative ; Louveigné-Spa. Geological map of Wallonia. 49/3-4. Leaflet

Manuscript submitted for reviewing (2017/03); leaflet of the new geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous editions, in 1898 (at the scale of 1/40.000, by Gustave Dewalque) and the second one, in 1958 (at the scale of 1/25.000 by Paul Fourmarier). ; Révision et 3ème édition complète ; Révision de la carte géologique de la Wallonie. Recherches collectives d'intérêt général