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person:"Sielemann, Marc"
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Search: subject_exact:"Internet-Telefonie"
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Internettelefonie
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Sielemann, Marc
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Bielefelder Schriften zur wirtschaftswissenschaftlichen Praxis
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Voice over IP : Wirtschaftlichkeitsbetrachtung für Groß- und mittelständische Unternehmen
Sielemann, Marc
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2005
Persistent link: https://www.econbiz.de/10003270826
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Voice over IP : Wirtschaftlichkeitsbetrachtung für Groß- und mittelständische Unternehmen
Sielemann, Marc
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2005
Persistent link: https://www.econbiz.de/10004879654
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