Glen Mitchell Books

The Marx Brothers Encyclopedia

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Often imitated, never rivaled, the Marx Brothers were the masters of vaudeville. Originally masters of the stage, they conquered almost every medium, creating memorable sketches and classic mo...

A Bad Penny Always Comes Back

By Kristen Gallemeaux, Glen Mitchell

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CompTIA A Certification

By Glen Mitchell

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The CompTIA A+ Complete Practice Questions is your ultimate preparation guide for Exams 220-1001 and 220-1002. This study guide covers 100 percent of the objectives for both exams (220-1001 & 220-1...

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.