Adam Campbell Books

The Testosterone Advantage Plan

By Jeff Volek, Adam Campbell, Lou Schuler, Mike Mejia

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Men's Health TNT Diet

By Adam Campbell, Jeff Volek PhD RD

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The Men's Health TNT Diet is a revolutionary program for burning fat and building muscle. Utilizing Targeted Nutrition Tactics (TNT), the authors move beyond "good carbs" and "bad carbs" to focus i...

The women s health big book of exercises

By Adam Campbell

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The Women sHealth little book of exercises

By Adam Campbell

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The Men's Health Big Book of Exercises

By Adam Campbell

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Revised edition includes 100 new exercises!The Men’s Health Big Book of Exercises is the essential workout guide for anyone who wants a better body. As the most comprehensive collection of ex...

The Women's Health Big Book of Exercises

By Adam Campbell

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Revised edition includes 100 new exercises! The Women's Health Big Book of Exercises is the essential workout guide for anyone who wants a better body. As the most comprehensive collection of exerc...

Total Body Plan

By Adam Campbell, Bill Hartman

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Men s Health TNT Diet

By Jeff Volek, Adam Campbell

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Men s Health big book of exercise

By Adam Campbell

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Men s Health Little Book of Exercises

By Adam Campbell

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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.