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Berlin: Krüger, 1935
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Berlin: Lippa-Fay, 1950
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Hamburg: Moelich, 1947
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Hamburg: Mölich, 1948
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Berlin: Universitas, 1934
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Berlin: Keil, 1935
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Berlin: Buechergilde Gutenberg, 1935
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Berlin: Universitas, 1933
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Berlin: Universitas, 1934
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Berlin: Universitas, 19XX-
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JSTOR, 1953
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JSTOR, 1934
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JSTOR, 1935
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JSTOR, 1936
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JSTOR, 1934