Doug Mayer Books

The Cutting Edge: The Catalog For The Man, Woman, And Child Who Has Everything...But Wants More!
Newt!: A Paper Doll Book
The Supreme Court
The Supreme Court

By Jim Becker, Andy Mayer

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Bill & Al's excellent adventure
Bill and Al's Excellent Adventure
Name That Republican: A Field Guide To The Rogues And Rascals Of The Gop
Name That Republican: A Field Guide To The Rogues And Rascals Of The Gop

By Doug Mayer, Mayer, Doug

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jam-packed With Hilarious Facts, Mind-boggling Stats, And Unbelievable (but True!) Quotes, As Well As 100 Bonus Gop Quiz Questions, This Rogue's Gallery Of Fifty (in)famous Republicans Is Destined...

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Cyber Jokes
Cyber Jokes

By Doug Mayer

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Build Your Own Walkie Talkies Kit Discovery Kit
The slightly skewed computer dictionary
Trail Running Illustrated

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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.

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