Christine Leduc Gueye Books

Peintures monumentales de Bretagne

By Cecile Oulhen, Christian Davy, Didier Jugan, Christine Jablonski, Christine Leduc Gueye

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D intimite d eternite

By Christine Leduc Gueye

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Les monuments aux morts peints dans les eglises

By Christine Leduc Gueye

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La prospection des peintures murales de la Région Pays de la Loire menée en 2010 a révélé l'existence d'une soixantaine de monuments aux morts de 1914-1918 au sein des églises paroissiales. Cette d...

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.