lac (2) Antiquities, Prehistoric (2) Prehistoric peoples (2) Germany, Northern (2) puits (1) végétation (1) région (1) pollen (1) paysage (1) histoire (1) analyse (1) métal lourd (1) histoire de l'écologie (1) changement écologique (1) agriculture (1) couverture (1) âge (1) climat (1) captage (1) Europe (1) Counting (1) History (1) Agriculture (1) Identification (1) Volcanic ash, tuff, etc (1) Varves (1) Social sciences (1) Pollen (1) Plants (1) Palynology (1)