LIBROS DEL AUTOR: john messina

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  • Telecommunications Expense Management
    John Messina / Michael Brosnan
    This straightforward book will provide you with the insight necessary to save your organization revenue through the processes of bill auditing, expense reduction, and savvy contract negotiations. Information technology professionals will find the authors’ suggestions useful, and yet uncomplicated to implement. After you have used their suggestions to identify possible errors or...
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    82,46 €