Gary Null Books

Allergies and Weight Control Sound Horizons Presents
How to Strengthen Your Immune System Sound Horizons Presents
The Encyclopedia of Natural Healing for Men and Women
Healing Your Body Naturally
Healing Your Body Naturally

By Gary Null

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The women's encyclopedia of natural healing
The complete guide to sensible eating
Get Healthy Now A Complete Guide to Prevention Treatment and Healthy Living
The healthy vegetarian
The healthy vegetarian

By Gary Null

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"In his characteristically engaging and matter-of-fact style, Dr. Null not only forwards a brilliant and thorough discussion on the importance of the vegetarian diet and how to be successful at it,...

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Reboot Your Brain
Reboot Your Brain

By Gary Null

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Good Food Good Mood
Good Food Good Mood

By Gary Null

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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.

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