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Weimar: Knabe, 1982
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Weimar: Gebr. Knabe, 1978
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Weimar: Gebr. Knabe, 1971
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Berlin: Kinderbuchverl., 1957
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Berlin: Kinderbuchverlag, 1957
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Berlin: Verlag Neues Leben, [1950]
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Weimar: Knabe, 1970
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Leipzig: Hofmeister, 1965
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Leipzig: Hofmeister, [19]57
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Springer Science and Business Media LLC, 2015
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Informa UK Limited, 2009
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International Society for Performance Improvement, 2016
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California Digital Library (CDL), 2014
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American Diabetes Association, 2007
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American Diabetes Association, 2007
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Wiley, 2003
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Ovid Technologies (Wolters Kluwer Health), 1999
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Wiley, 1997
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Oxford University Press (OUP), 2019
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F1000 Research Ltd, 2018