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Springer-Verlag, 1981
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Springer-Verlag, 1979
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Academia, 1976
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Springer Science and Business Media LLC, 1976
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Naturhistorischen Museums in Wien, 1971
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Springer-Verlag, 1956
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American Bryological and Lichenological Society, 1993
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JSTOR, 1991
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American Bryological and Lichenological Society, 1991
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Springer Science and Business Media LLC, 1986
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Springer-Verlag, 1986
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Springer Science and Business Media LLC, 1981
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Springer Science and Business Media LLC, 1979
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JSTOR, 1994
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JSTOR, 1994
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American Bryological and Lichenological Society, 1994
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JSTOR, 1993
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Elsevier BV, 1974