Matthew L. Helm Books

Family tree maker for dummies

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"Discover how to: research more effectively using genealogical databases ; customize the look of your family tree ; share family research on the web ; enhance your records with multimedia features...

Your official America Online guide to genealogy online

By Matthew Helm

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Genealogy For Dummies

By April Leigh Helm, Matthew L. Helm

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Ahnenforschung Online Fur Dummies

By April Leigh Helm, Matthew L. Helm

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Genealogy Online For Dummies For Dummies Sports Hobbies

By Matthew Helm, April Leigh Helm, Matthew L. Helm

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Genealogy Online For Dummies R

By Matthew Helm

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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.