Helmut Vonhoegen Books

Einstieg in XML

By Helmut Vonhoegen

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Le grand livre de Microsoft Excel 5 pour Windows

By Peter Gang

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Excel 2002

By Helmut Vonhoegen

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Informations pour exploiter touts les possibilités offertes par Excel : saisie et mise en forme des données, réalisation des graphiques, transfert de données Excel sur le Web, etc.

Das grosse Buch. Office XP.

By Helmut Vonhoegen, Pia Maslo, Andreas Maslo

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Das grosse Buch Windows XP Professional.

By Helmut Vonhoegen, Andreas Maslo

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Das grosse Buch Excel 2002.

By Helmut Vonhoegen

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Audio Video Foto mit Windows XP

By Andreas Maslo

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.