Isabel Otter Books

I Love Daddy Every Day

By Alicia Mas, Isabel Otter

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Christmas Is Every Day

By Alicia Mas, Isabel Otter

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Hello, Frog

By Isabel Otter Illustrated By Sophie Ledesma

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Join Frog on a trip around the pond and through the rainforest, filled with touch-and-feel textures, lift-the-flaps, and peek-through holes!Little ones will love to join Frog on an exciting adventu...

Our World Turn and Learn

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How to Build a City

By Isabel Otter

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Piu piu

By Georgina Mercader Bausa, Sophie Ledesma, Isabel Otter

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I Love You Every Day

By Alicia Mas, Isabel Otter

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The fourth book in a collectable new series that celebrates the true spirit of the holidays every day, this colorful novelty picture book engages with the sweet tenderness of Valentine's Day year-r...

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.