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Bergen: Univ., Botanisk inst., 1996
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Jena; Stuttgart; New York: G. Fischer, 1993
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Oxford [u.a.]: Pergamon Press, 1971
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Bergen [u.a.]: Norwegian Univ. Press, 1968 [erschienen] 1969
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Oxford [u.a.]: Blackwell, c 1975
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Copenhagen: Munksgaard, 1964
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Copenhagen: Munksgaard, 1950
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Oxford; New York: Pergamon Press, 1979
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Toronto: Pergamon Press, 1966
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New York: Oxford University Press, 2020
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1996
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Scandinavian University Press / Universitetsforlaget AS, 1996
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Elsevier BV, 1993
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Wiley, 1991
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International Bureau for Plant Taxonomy and Nomenclature, 1991
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Wiley, 1990
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Wiley, 1990
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International Bureau for Plant Taxonomy and Nomenclature, 1990
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Springer Science and Business Media LLC, 1987
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International Bureau for Plant Taxonomy and Nomenclature, 1986