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By: Sukopp, Ulrich - Schmitz, UlfType: ArticleIn: BioRisk : biodiversity & ecosystem risk assessmentVolume: 8Series:Issue:Date: 2013Page Range: 89-110Publication Info: Sofia, Bulgaria PensoftSubjects: Brassica napus floristic mapping Genetically modified plants hybrid offspring oilseed rape post-market environmental monitoring standardised methods VDI Guidelines wild crossing partners