{"id":"000489130","type":"article","title":"Vegetation horizons and frustrated terps. New radiocarbon ages from the Paddepoel area near Groningen","pages":"345-356","container-title":"Berichten van de Rijksdienst voor het Oudheidkundig Bodemonderzoek, 39.1989","author":[{"family":"Streurman","given":"H.J."}],"issued":{"raw":"1989"}}