Gerard Guegan Books

Hemingway Hammett derniere

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""Hemingway, qui paraissait fatigué, accablé, désorienté lorsqu'il s'est enfermé avec son autre lui-même, respire désormais la sérénité. Et l'assurance. Il ira voir Hammett, et ils feront la paix,...

Les irregulieres

By Gerard Guegan

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Le dernier des reveurs

By Gerard Guegan

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ABCdaire du cinema francais

By Gerard Guegan

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L' avenir est en retard

By Gerard Guegan

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Pere et fils

By Gerard Guegan

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Beau soleil.

By Gerard Guegan

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Une femme coincee

By Gerard Guegan

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Pour toujours

By Gerard Guegan

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Journal d un vieux degueulasse

By Gerard Guegan, Charles Bukowski

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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.