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Berlin: Springer, 1926
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Oxford [u.a.]: Newnes, 1999
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Hayes, Middlesex: E.M.I. Records Limited, [1963]
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[Erscheinungsort nicht ermittelbar]: Newnes, 2014
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New York : Published by order of the Trustees, American Museum of Natural History, 1907
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Washington, DC, 1964 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2008
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Cambridge, MA: Harvard University Press, [2022] ; [Online-Ausgabe]
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Berlin; Boston: De Gruyter, [2021] ; [Online-Ausgabe]
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Publication Database PIK (Potsdam Institute for Climate Impact Research), 2015
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2022
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National Cactus & Succulent Society, 1966
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National Cactus & Succulent Society, 1966
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National Cactus & Succulent Society, 1967
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Wiley, 1963
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JSTOR, 1949
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JSTOR, 1947
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JSTOR, 1945
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JSTOR, 1946
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The Science Press, 1945
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The Science Press, 1944