Gary McAvoy Books

Harvest for Hope

By Gary McAvoy, Gail Hudson, Jane Goodall

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"An exploration of the global meaning of food and what all of us can do to exercise power over the food industry and, ultimately, our environment"--Provided by the publisher.

Harvest for Hope

By Gary McAvoy, Gail Hudson, Jane Goodall

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For two thousand years, believers have relied on Christ’s Resurrection as the bedrock of Christian faith. But what if the Vatican had been blackmailed into suppressing a first-century manuscript re...

The Magdalene Deception

By Gary McAvoy

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The Magdalene Reliquary

By Gary McAvoy

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Harvest for Hope

By Gary McAvoy, Gail Hudson, Jane Goodall

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Cracking the New E conomy

By Gary McAvoy

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The Magdalene Veil

By Gary McAvoy

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An old World War II diary filled with cryptic clues launches two friends on an adventure around the world . . . . . . but their path is fraught with danger and deception . . . . . . and the treasur...

The Vivaldi Cipher

By Gary McAvoy

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During The Papal Conclave Of 1740, Violinist Antonio Vivaldi Is Given A Devastating Secret By His Dying Mentor, The Man Favored To Be Elected Pope Before He Was Poisoned. Fearful Of The Italian Cam...

The Petrus Prophecy

By Gary McAvoy, Ronald L Moore

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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.