Julien Fontaine Books

Bons baisers de Valenciennes

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Le Plessis Robinson

By France De Griessen, Charlotte Mus, Pierre Prevot Leygonie, William Pesson, Julien Fontaine, Vincent Le Gall, Marc Gierst, Maurice Culot

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The village of Plessis-Robinson knows the enthusiasm of the Parisians who, from 1848, come in droves to frequent the taverns and their huts perched in the branches of large chestnut trees. A few ye...

La Maison de Verre

By Jacques Fontaine

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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.