Don Campbell Books

Healing at the Speed of Sound: How What We Hear Transforms Our Brains and Our Lives

By Don Campbell, Alex Doman

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HH 4538 the Mozart Effect Hodder Headline Audiobooks

By Don Campbell

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The bestselling author of The Mozart EffectEvery day our Spirit is tested by faith in what we see, feel, and do. From times of great pain and stress to those of joy and deep balance, sound is a con...

Creating Inner Harmony

By Don Campbell

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Whether we sing, hum, or just inwardly "Ooh" and "Aah," our voices are ideal for expressing emotions, releasing stress, awakening energy or just exploring the world of creativity. This book is a fi...

Healing at the Speed of Sound

By Don Campbell

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The bestselling author of The Mozart Effect taps cutting- edge science to show how we can use sound to improve our lives and achieve our goals. Based on over a decade of new research, Don Campbel...

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.