Duffy Robbins Books

The author describes one of his favorite Biblical heroes, David, King of Israel, and discusses how teenagers can apply the lessons of David's life to their own lives.

Smaller Church Youth Ministry

By Brad Fiscus, Duffy Robbins, Stephanie Caro

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When kids ask more sticky questions First aid for youth groups

By Duffy Robbins

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Youth Ministry Nuts and Bolts

By Duffy Robbins

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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.