Eric Litwin Books

Pete the Cat and His Four Groovy Buttons

By Eric Litwin

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Pete the Cat Saves Christmas with Read Along Cd

By James Dean

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Pete the Cat Paperback Book Set Includes 4 Books

By James Dean, Eric Litwin

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If you re groovy and you know it hug a friend

By Eric Litwin

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Groovy Joe is back, and this time he's singing a groovy rendition of a favorite preschool song! Are you ready to sing along?

Helado y dinosaurios

By Eric Litwin

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Groovy Joe shares his tub full of ice cream with his unexpected dinosaur guests. José el Chévere comparte su bañera llena de helado con sus invitados inesperados de dinosaurios.

Groovy Joe

By Tom Lichtenheld, Eric Litwin

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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.