Département de la Meuse (1) Belgique (1) Variation (1) Assaying (1) Observations (1) Observations (1) Groundwater (1) Water (1) Tact (1) Rivers (1) Rain and rainfall (1) Racing (1) Perspective (1) Percentage (1) Optics (1) Humility (1) Head (1) Droughts (1) Discretion (1) Dams (1) Curves (1) Beavers (1) Barrages (1) Average (1) Aquifers (1) Addition (1) In literature (1) Analysis (1) Influence (1) Soils (1)