Jean Marc Lofficier Books

The Doctor Who programme guide

By Jean Marc Lofficier

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Tintin

By Jean Marc Lofficier

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The silhouette of Tintin is one of the most recognisable visual icons of the modern world, having first appeared in Belgium in 1929. In this fully revised and expanded edition of this popular pocke...

Tintin

By Jean Marc Lofficier

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Kabur Vol. 1

By Jean Marc Lofficier, Claude Legrand

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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.