Mark Holmen Books

Grave A Fe No Coracao Dos Seus Filhos...

By Mark Holmen

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Faith Begins Home Mom

By Mark Holmen, Maria Holmen

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Christian parents hear all the time about the importance of family devotions, but if they never experienced the impact of seeking God together as a family during their own childhoods, getting start...

Faith begins home grandparents

By Mark Holmen

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Faith begins home family

By Mark Holmen

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Building faith at home

By Mark Holmen

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Faithbegins home prayer

By Mark Holmen

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Faith home devotions

By Mark Holmen

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Faith begins home dad

By Mark Holmen

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Faith home mom

By Maria Holmen

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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.