Erwin Madrid Books

Disappearing Otters

By Emma Bernay, Erwin Madrid, Emma Carlson Berne

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Judy Moody and Friends

By Megan McDonald, Erwin Madrid

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Judy Moody and Friends: Prank You Very Much

By Megan McDonald Illustrated By Erwin Madrid

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Judy can’t wait for her mischief to bear fruit when Stink discovers that his backyard science project is an overnight success. Hardy-har-har!Prankenstein strikes again! The Summer Science Sho...

Judy Moody and Friends: Prank You Very Much

By Megan McDonald Illustrated By Erwin Madrid

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Judy can’t wait for her mischief to bear fruit when Stink discovers that his backyard science project is an overnight success. Hardy-har-har!Prankenstein strikes again! The Summer Science Sho...

Judy Moody and Friends: Izzy Azumi, F.D.O. (Future Dog Owner)

By Megan McDonald Illustrated By Erwin Madrid

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Fellow F.D.O.s (future dog owners) will delight in Izzy’s quest to secure a furry best friend with help from pals Judy and Stink—and a mysterious letter writer.Fluffy dogs. Scruffy dogs...

Judy Moody and Friends: Izzy Azumi, F.D.O. (Future Dog Owner)

By Megan McDonald Illustrated By Erwin Madrid

Average: 0.00, 0 Ratings

Fellow F.D.O.s (future dog owners) will delight in Izzy’s quest to secure a furry best friend with help from pals Judy and Stink—and a mysterious letter writer.Fluffy dogs. Scruffy dogs...

Judy Moody and Friends

By Megan McDonald, Erwin Madrid

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Mrs. Moody in the Birthday Jinx

By Megan McDonald, Erwin Madrid

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Judy Moody and Friends

By Megan McDonald, Erwin Madrid

Average: 0.00, 0 Ratings

Judy Moody and Friends

By Megan McDonald, Erwin Madrid

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.