David Mathis Books

In December of 2013, several thousand college students gathered together to mobilize for the most dangerous and loving cause in the universe: rescuing people from eternal suffering and bringing the...

The Christmas We Didn t Expect

By David Mathis

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Happily Ever After

By Marshall Segal, David Mathis, Kim Cash Tate, P.J. Tibayan, Desiring God, Francis Chan, Nancy DeMoss Wolgemuth, John Piper, Donald Whitney, Jasmine Holmes

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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.