Karen Holmes Books

How to be an Alien

By George Mikes, Mikes

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The Railway Children Penguin Readers Level 2

By Nesbitt, Karen Holmes, Edith Nesbit

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Tales from Hans Christian Andersen

By Hans Christian Andersen

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Three Great Plays of Shakespeare

By William Shakespeare

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Edmond Dantes is a clever young seaman, but he has enemies who tell lies about him. On the day of his wedding to the beautiful Mercedes, Edmond is thrown into prison. There he meets a man who tells...

First Wave

By Chris Brancato, Karen Holmes

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First Wave

By C. Brancato

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How to Be an Alien PENG

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The Testament

By Karen Holmes, John Grisham

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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.