Cathy Hapka Books

Astro Boy Color and Sticker Book Astro Boy

By Cathy Hapka

Average: 0.00, 0 Ratings

Kicking & Screaming: The Comeback Kids

By Cathy Hapka

Average: 0.00, 0 Ratings

Kicking & Screaming: My Dad, the Coach

By Cathy Hapka

Average: 0.00, 0 Ratings

When Sam gets traded from the first place Gladiators to the last place TIgers, he is very disappointed. The Tigers do not even have a coach! Sam's dad volunteers, but when he gets a taste of winn...

King Kong: The Search for Kong

By Cathy Hapka

Average: 0.00, 0 Ratings

Fantastic Four: The Cosmic Storm

By Cathy Hapka

Average: 0.00, 0 Ratings

Fantastic 4: The Movie Storybook

By Cathy Hapka

Average: 0.00, 0 Ratings

X-Men: The Last Stand: Beast Chooses Sides

By Cathy Hapka

Average: 0.00, 0 Ratings

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.