Jeff Mack Books

Dog Gets a Pet Dog and Pony Show

By Jeff Mack

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The things I can do

By Jeff Mack

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A boy shows a book he has made about all of the things he can do for himself, from making his own lunch to fixing his own toys.

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.

Jeff Mack Books

Mr. Monkey Bakes a Cake

Mr. Monkey Takes a Hike

Dog Gets a Pet Dog and Pony Show

The things I can do

Hush Little Polar Bear

Dog Gets a Pet

Dog Gets a Pet

Dog Gets a Pet

We Are up a Tree

We Are up a Tree

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?