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Stuttgart: Enke, 1917
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Leipzig [u.a.]: Duncker & Humblot, 1929
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Berlin: Duncker & Humblot, 1929
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Berlin: Duncker & Humblot, 1910
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Leipzig: Duncker & Humblot, 1910 ; Online-Ausgabe, Kiel: ZBW; Hamburg, 2018
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Leipzig: Duncker & Humblot, 1910 ; Online-Ausg., Leipzig: UBL, 2017
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The American Economic Association, 1911