Valerie Guidoux Books

My Surprise Book of Night and Day

By Valerie Guidoux

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Abbeville animals

By Valerie Guidoux

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When their father is driven away from the family by an aggressive outsider, two lion cubs try to learn how to survive on their own. Includes additional information about lions and a game related to...

Little Dolphins

By Valerie Guidoux

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Little Polar Bears

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Ositos Little Bears Nacidos Para Ser Salvajes Born to Be Wild

By Valerie Guidoux

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Little bears

By Valerie Guidoux

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By day and by night

By Valerie Guidoux

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Exploring the activities children do in the day versus during the night and how the world around them changes over the course of a day and a night.

Hidden animals

By Valerie Guidoux

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Explores how and why animals use camouflage.

La ferme

By Valerie Guidoux

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Les Saisons

By Sylvaine Peyrols, Valerie Guidoux

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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.