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Berlin; Stuttgart: Cramer in der Gebr.-Borntraeger-Verl.-Buchh., c 2000
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Wiesbaden [u.a.]: Quelle und Meyer, 1995
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1980
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Wiesbaden: Reichert, 1989
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Wiesbaden: Reichert, 1987
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Wiesbaden: Reichert, 1985
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Ulm: Herbert Birkenfeld, 1997
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Schweizerbart, 2023
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Schweizerbart, 2014
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W. Szafer Institute of Botany Polish Academy of Sciences, 2013
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The American Bryological and Lichenological Society, 2010
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American Bryological and Lichenological Society, 2010
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Botanic Garden and Botanical Museum Berlin-Dahlem, Freie Universität Berlin, 2009
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Schweizerbart, 2008
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JSTOR, 2006
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Botanic Garden and Botanical Museum Berlin-Dahlem, Free University Berlin, 2006
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Schweizerbart, 2006
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Schweizerbart, 2007
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JSTOR, 2006
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Botanic Garden and Botanical Museum Berlin-Dahlem, Free University Berlin, 2006