Chris Idzikowski Books

Expert Guide to Sleeping Well The

By Chris Idzikowski, John Voce

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Sleep CommonSense Approach

By Brenda O Hanlon

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Beating Insomnia

By C.J. Idzikowski

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The Expert Guide to Sleeping Well

By Chris Idzikowski

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Most people in the West fail to get enough sleep, which can contribute to serious health problems. Reading this book, and acting on its advice, could be the single best thing most people...

Learn to Sleep Well

By C.J. Idzikowski

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Learn to Sleep Well Kit

By C.J. Idzikowski

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Learn to sleep well

By Christopher Idzikowski

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Aprender a Dormir Bien

By Chris Idzikowski

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Como dormir mejor

By Christopher Idzikowski

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Learn to Sleep Well

By Chris Idzikowski

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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.