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By: Zimmermann, Heike - Loos, Jacqueline - Wehrden, Henrik von, - Fischer, JoernType: ArticleIn: NeoBiotaVolume: 24Series:Issue:Date: 2015Page Range: 55-65Publication Info: Pensoft Publishers 2015Subjects: Erigeron annuus Maxent Robinia pseudoacacia Romania Solidago canadensis Xanthium strumarium