Chris Judge Books

Create Your Own Superhero Epic

By Andrew Judge, Chris Judge

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Fantastic Quest

By Andrew Judge, Chris Judge

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Tin

By Chris Judge

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A metal boy named Tin is looking after his little sister, Nickel, one afternoon when she grabs hold of a balloon and floats away. Tin and his dog, Zinc, set off in hot pursuit as she floats toward...

Snow Beast

By Judge Chris Children S Writer And Illustrator

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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.