JJ Harrison Books

Llama Llama el ayudante de las fiestas English-Spanish Edition)

By Anna Dewdney, Adriana Dominguez, JJ Harrison, Isabel Mendoza

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Celebrate the holidays with Llama Llama and all his friends in this beautifully illustrated bilingual 8 x 8 storybook, based on the hit animated Netflix series! ¡Celebra las fiestas de f...

Clarence 2. Especial campamento de miedo

By JJ Harrison, Joie Brown, Derek Fridolfs, Cara McGee, Mario Rodriguez Rodriguez

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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.