Astrid Holm Books

School Daze Teenage Mutant Ninja Turtles

By Astrid Holm

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A Visit to Stump Asteroid Teenage Mutant Ninja Turtles

By Ryan Brown, Dean Clarrain, Astrid Holm

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BEASTY BITS Cereal Box Joke Books

By Astrid Holm

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I Am Max

By Astrid Holm

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Grow your heart three sizes and get in on all of the Grinch-mas cheer with this board book based on the original How the Grinch Stole Christmas, featuring everyone's favorite dog-turned-reind...

The first battle

By Crystal D. Herman

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The Turtles' first ninja mission when they rescue April from danger.

Teenage Mutant Ninja Turtle Bk

By Mirage Studios

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CORNBALLS Cereal Box Joke Books

By Astrid Holm

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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.