Therese Willer Books

Tomi Ungerer

By Therese Willer, Peter Sis, Tomi Ungerer, Claire Gilman

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Du duel au duo

By Therese Willer

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"Le dessin de presse et la caricature ont fidèlement relayé l'histoire tourmentée du couple franco-allemand de 1870 à nos jours, offrant des images frappantes par leur pertinence et leur perspicaci...

Tomi Ungerer

By Therese Willer

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Tomi Ungerer et New York

By Therese Willer, Tomi Ungerer, Martine Andlauer, France Musee D Art Moderne Strasbourg

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Tomi Ungerer

By Therese Willer, Didier Marie Guenin

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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.