Leo Galland Books

The Four Pillars of Healing: How the New Integrated Medicine- -the Best of Conventional and Alternative Approaches- - Can Cure You

By Leo Galland

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Gyarando Hakase no metaborikku daietto

By Leo Galland

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The Fat Resistance Diet Unlock the Secret of the Hormone Leptin to

By Leo Galland

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The allergy solution

By Leo Galland

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"An epidemic of allergies is spreading around the world. One billion people now suffer from allergic diseases such as asthma, hay fever, eczema, and food allergies. But this is just the tip of the...

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.