{"id":"000997907","type":"book","title":"Zum Vorkommen der Spitzklette (Xanthium strumarium L","publisher":"Rheinland-Verlag","publisher-place":"Köln","pages":"81-88","container-title":"7000 Jahre bäuerliche Landschaft: Entstehung, Erforschung, Erhaltung. Zwanzig Aufsätze zu Ehren von Karl-Heinz Knörzer","author":[{"family":"Brinkkemper","given":"Otto."}],"issued":{"raw":"1993"}}