Judith Kerr Books

Mog the Forgetful Cat Gift Set

By Judith Kerr

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The Tiger Who Came to Tea: TV Adaptation Coming This Christmas

By Judith Kerr

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Mog's Family of Cats board book

By Judith Kerr

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"It's things we've never tried before That are the greatest fun, Like riding on a dinosaur, Which I had never done." Married couples are used to little trips together. Henry's wife can see no reaso...

The Great Granny Gang

By Judith Kerr

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Here comes the fearless granny gang, The youngest eighty-two. They leap down from their granny van, And there's nothing they can't do! A gleeful celebration of why grannies are great! Through wonde...

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.