{"id":"001519946","type":"article","title":"Urgeschichtliche Unkräuter im Rheinland","publisher":"Dr. W. Jung Publishers","publisher-place":"The Hague","pages":"89-111","container-title":"Vegetatio, volume 23, issue 1-2 (1971","author":[{"family":"Knörzer","given":"Karl-Heinz."}],"issued":{"raw":"1971"}}