Tony Coffey Books

Answers to Questions Catholics Are Asking

By Tony Coffey

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Una vez fui catolico

By Tony Coffey

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Respuestas a preguntas que hacen los catolicos

By Tony Coffey

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Esta presentacion clara y directa de las diferencias entre la tradicion catolica romana y las ensenanzas de las Escrituras ayudara a los catolicos a examinar el punto de vista biblico acerca de tod...

Once A Catholic

By Tony Coffey

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Once a Catholic

By Tony Coffey

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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.