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New York: Dutton, 1976
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[New York]: Puffin Books, 1977
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New York: Macmillan, c 1974
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München: Kösel, 2017
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New York, NY: Dutton Children's Books, 1978
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New York: The Dial Press, 1979
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Hamburg: Carlsen, 1995
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Reinbek bei Hamburg: Carlsen, 1982
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München: Bertelsmann, 1984
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Wildlife Information Liaison Development Society, 2019
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Elsevier BV, 1990
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American Diabetes Association, 1996
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Hindawi Limited, 2013
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Elsevier BV, 2015
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Wildlife Information Liaison Development Society, 2020
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2018
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Elsevier BV, 1993
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Elsevier BV, 1997
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Elsevier BV, 2000
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American Diabetes Association, 1996