Harzé - La Gleize. Carte géologique de Wallonie. 49/7-8. Notice explicative ; Harzé - La Gleize. Geological map of Wallonia. 49/7-8. Leaflet

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 first edition published in 1899 (Gustave Dewalque) at the scale of 1/40.000 by the "Commission Géologique de Belgique" and the second one, published in 1959 (Asselberghs & Geukens) at the scale of 1/40.000 by the Geological Survey of Belgium. ; Programme de révision des cartes géologiques de Wallonie. Recherches collectives d'intérêt général.