Francois Dallemagne Books

Les casernes francaises

By Francois Dallemagne

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Les defenses de Lyon

By Francois Dallemagne

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Patrimoine militaire

By Francois Dallemagne

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La chartreuse forteresse de Pierre Chatel et son fort de protection

By Francois Dallemagne

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Située près de Belley, dans l'Ain, à mi-chemin entre Lyon et Genève, la chartreuse-forteresse de Pierre-Châtel est à l'origine (première mention en 1149) une résidence des comtes, puis des ducs, de...

Les defenses de Lyon

By Francois Dallemagne

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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.