puits (1) temps (durée) (1) spectacle (1) fleuve (1) milieu naturel (1) champ (1) évolution (1) érosion (1) environnement (1) Preservation (1) Channels (1) Observations (1) Observations (1) Antiquities, Prehistoric (1) Riparian areas (1) Rates (1) Time (1) Societies (1) Rivers (1) Radiocarbon dating (1) Organization (1) Nineteenth century (1) Nature and nurture (1) Middle age (1) Prehistoric peoples (1) Inclosures (1) Hypothesis (1) Floods (1) Evolution (1) Euthenics (1)