Gilles Dormion Books

Les nouveaux mysteres de la Grande Pyramide

By Gilles Dormion

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Chambre de Cheops

By Gilles Dormion

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La chambre de Snefrou

By Gilles Dormion

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"Depuis la construction du complexe funéraire de Djoser sous la IIIe dynastie (vers 2600 av. J.-C.), les Égyptiens ont bâti à grande échelle, en maçonnerie de pierre de taille, selon un procédé qui...

La chambre de Meidoum

By Gilles Dormion

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La chambre de Meidoum

By Gilles Dormion

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La chambre de Meidoum

By Gilles Dormion

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La chambre de Khephren

By Gilles Dormion

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Kheops, nouvelle enquete

By Gilles Dormion

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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.