Catherine Whitney Books

The Eat Right 4 Your Type Complete Blood Type Encyclopedia Display with Postcard

By Peter J. D Adamo, Catherine Whitney

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Stop Smoking for Good

By Balasa Prasad

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Why do most people who try to quit smoking fail-even with the help of the nicotine patch, gum, medications, hypnotism, or other state-of-the-art aids? In his radical approach to conquering the smok...

Stop Gambling for Good

By Balasa Prasad, Catherine Whitney

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Stop Overeating for Good

By Balasa Prasad, Catherine Whitney

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Lutter contre le cancer et accompagner son traitement

By Peter D Adamo

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Fertilite, conception, grossesse et bebe

By Peter D Adamo

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4 Blutgruppen Richtig leben.

By Peter J. DAdamo, Catherine Whitney

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Vier 4 Blutgruppen. Vier Strategien fur ein gesundes Leben. Mit neuem Rezeptteil.

By Peter J. Dadamo, Catherine Whitney

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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.