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[Milano]: Feltrinelli, c 1993
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Bologna: Bora Verl., 1979
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PERSEE Program, 1991
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CAIRN, 1991
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JSTOR, 1969
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JSTOR, 1964
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JSTOR, 1964
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Informa UK Limited, 1966
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JSTOR, 1974
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Wiley, 2003
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JSTOR, 1971
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JSTOR, 1965
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MDPI AG, 2017
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MDPI AG, 2018
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Springer Science and Business Media LLC, 2023
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Springer Science and Business Media LLC, 2021
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Springer Science and Business Media LLC, 2021
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Springer Science and Business Media LLC, 2021