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Jena: Fischer, 1940
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Darmstadt: Leske, 1954
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Hamburg: Verlag Weltarchiv; Kiel, Hamburg: ZBW – Leibniz Information Centre for Economics, 1954
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Hamburg: Verlag Weltarchiv; Kiel, Hamburg: ZBW – Leibniz Information Centre for Economics, 1950
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1929
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1929
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1929
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1929
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1929
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Association for Research in Vision and Ophthalmology (ARVO), 2008
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Proceedings of the National Academy of Sciences, 2002
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National Academy of Sciences, 2002
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Ovid Technologies (Wolters Kluwer Health), 2013
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Ovid Technologies (Wolters Kluwer Health), 2016