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By: Saar, Dayle E. - Sorensen, Paul Davidsen, - Hjerting, J PType: ArticleIn: Acta Botánica MexicanaVolume: 64Series:Issue:Date: 2003Page Range: 19--24Publication Info: México, Instituto de Ecología, A C, 1988-Subjects:
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By: Hawkes, J G - Hjerting, J P - Tarn, T. R.Type: ArticleIn: PhytologiaVolume: 65Series:Issue: 2Date: 1988Page Range: 114--118Publication Info: Bronx Park, New York H.A. Gleason and H.N. MoldenkeSubjects: