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By: Penev, Lyubomir - Kress, W John. - Knapp, Sandra - Li, De-zhu. - Renner, Susanne,Type: ArticleIn: PhytoKeysVolume: 1Series:Issue:Date: 2010Page Range: 1-14Publication Info: Pensoft Publishers 2010Subjects: E-publications, open access, semantic tagging, sem