Thomas Griffin Books

Longing to Fall

By Thomas Griffin

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Cold Case

By Thomas Griffin

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Apologetics for Tweens

By Thomas Griffin

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Apologetics for Tweens is a one year curriculum with weekly scripture and apologetics lessons for 5th through 8th graders. It is the result of 13 years working with Christian youth at a Baptist chu...

Apologetics for Tweens

By Thomas Griffin

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From Sinner to Saint

By Thomas Griffin

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Internet Serial Killer

By Thomas Griffin

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Let Us Begin

By Thomas Griffin, Mark Mary Ames

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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.