Helmut Hubel Books

Iraq's road to war

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Twice in a decade, Iraq marched to war. In 1980 it invaded Iran and started an eight-year-long slaughter; and in 1990 it seized Kuwait, pitting itself against America and an international coalition...

Die Ostbeziehungen der sich erweiternden EU

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Urania Pflanzenreich.

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Unsere wirtschaft

By Kurt Gonner

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Nordafrika in der internationalen Politik

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Das Ende des Kalten Kriegs im Orient

By Helmut Hubel

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Sowjetunion und Dritte Welt

By Helmut Hubel

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Die sowjetische Nah- und Mittelost-Politik

By Helmut Hubel

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Turkei und Mittelost-Krisen

By Helmut Hubel

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Frankreichs Rolle im Nahen Osten

By Helmut Hubel

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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.