Chris Judge Books

Cloud Babies

By Eoin Colfer, Chris Judge

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Cloud Babies

By Eoin Colfer, Chris Judge

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Cloud Babies

By Eoin Colfer Illustrated By Chris Judge

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Eoin Colfer, New York Times best-selling author of the Artemis Fowl series, pens a warm, empathy-building story based on illustrator Chris Judge’s family’s experience with childhood ill...

The First Christmas Sweater (and the Sheep Who Changed Everything)

By Ryan Tubridy Illustrated By Chris Judge

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In a buoyant story filled with ewe-morous puns, a multicolored sheep who loves Christmas inspires a seasonal ritual.There are two things everyone knows about Hillary the sheep. One is that, unlike...

First Christmas Sweater and the Sheep Who Changed Everything

By Ryan Tubridy, Chris Judge

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Ogres Do Disco

By Kirsty McKay, Chris Judge

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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.