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[Sankt Augustin]: [Hochschule Bonn-Rhein-Sieg], [2019?]
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Leuven, [2017]
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Geneve: International Organization for Standardization, 2023
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Geneve: International Organization for Standardization, 2021
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Geneve: International Organization for Standardization, 2022
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Geneve: International Organization for Standardization, 2022
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Geneve: International Organization for Standardization, 2023
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Geneve: International Organization for Standardization, 2019
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Geneve: International Organization for Standardization, 2018
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Geneve: International Organization for Standardization, 2017
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Geneve: International Organization for Standardization, 2016
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Geneve: International Organization for Standardization, 2015
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Geneve: International Organization for Standardization, 2012
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Geneve: International Organization for Standardization, 2011
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Geneve: International Organization for Standardization, 2024
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Geneve: International Organization for Standardization, 2024
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Geneve: International Organization for Standardization, 2016