Martin Hess Books

Die Anwendbarkeit des humanitaren Volkerrechts, insbesondere in gemischten Konflikten

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"Eine Untersuchung der Anwendbarkeit der Genfer und Haager Konventionen anhand der Konflikte in Afghanistan, Angola, Kampuchea, im Libanon und im Tschad."

Praxishandbuch Verhandlungen at

By Martin Hess

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Wirtschaft und Raum

By Hans Dieter Haas, Martin Hess, Reinhard Paesler

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The Determinants and the forecastability of Swiss stock prices

By Martin Hess

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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.