Jon Klassen Books

Square

By Jon Klassen, Mac Barnett

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Triangle

By Jon Klassen, Mac Barnett

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Circle

By Jon Klassen, Mac Barnett

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How Does Santa Go down the Chimney

By Jon Klassen, Mac Barnett

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We Found a Hat

By Jon Klassen Illustrated By Jon Klassen

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“Offers the sly humor fans have come to expect along with a surprisingly tender ending. . . . A thought-provoking capper to Klassen’s ingenious series.” —School Library Jour...

Skunk and Badger Skunk and Badger 1

By Jon Klassen, Amy Timberlake

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Egg Marks the Spot Skunk and Badger 2

By Jon Klassen, Amy Timberlake

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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.